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Don Lum
Joined: 03 Sep 2012
Posts: 2919
Location: Arkansas
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 Posted: Jan 07, 2018 19:36 Post subject: Re: Baryte collection of Niels Brouwer |
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Niels, I am enjoying your great specimens and superb photography. Looking forward to seeing more.
Don
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Niels Brouwer
Joined: 26 Sep 2016
Posts: 54
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| Posted: Apr 02, 2018 17:44 Post subject: Re: Baryte collection of Niels Brouwer |
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Another update, this time with various baryte specimens from the African continent.
| Mineral: | Baryte |
| Locality: | | Rosh Pinah, Lüderitz District, ǁKaras Region, Namibia |  |
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| Dimensions: | 11,2 x 7,8 x 7,3 cm |
| Description: |
| Large golden yellow fans of chisel-shaped baryte crystals on matrix. Nice three-dimensional specimen, likely from a find in 1987. |
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| Viewed: |
57523 Time(s) |
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| Mineral: | Baryte |
| Locality: | | Brukkaros Complex, Berseba, Keetmanshoop District, ǁKaras Region, Namibia | |
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| Dimensions: | 9,5 x 1,3 x 1,0 cm |
| Description: |
| Unusually elongated prismatic baryte crystal with nice clarity, distinctly banded phantoms and complex termination. |
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| Viewed: |
57513 Time(s) |
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| Mineral: | Baryte |
| Locality: | | N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa | |
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| Dimensions: | 6 x 5,5 x 4 cm |
| Description: |
| Fan-shaped cluster of tabular, white, lustrous baryte crystals up to 5 cm in size with interesting detailed edges. |
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| Viewed: |
57562 Time(s) |
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| Mineral: | Baryte, Quartz |
| Locality: | | Irhoud Mine, Jebel Irhoud, Youssoufia Province, Marrakesh-Safi Region, Morocco | |
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| Dimensions: | 19 x 12 x 9 cm |
| Description: |
| Contrasting yellow quartz scattered across large rounded clusters of fine baryte blades. |
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| Viewed: |
57526 Time(s) |
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| Mineral: | Baryte |
| Locality: | | Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region, Morocco | |
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| Dimensions: | 11,5 x 9,8 x 4,7 cm |
| Description: |
| Large complex cockscombe baryte crystal with smaller ones on the front face. The dark inclusions give the piece a nice contrast. |
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| Viewed: |
57518 Time(s) |
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Andreas Gerstenberg
Joined: 04 Mar 2010
Posts: 336
Location: Chemnitz
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| Posted: Apr 03, 2018 06:36 Post subject: Re: Baryte collection of Niels Brouwer |
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Hi Niels,
Nice pieces! Regarding your Müschede specimen: I'm definitely not familiar with that region, but it was told to me by several local collectors that these specimens all came from the Ruhr-Lippe-quarry not the Lanwehr quarry.
Cheers
Andreas
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Niels Brouwer
Joined: 26 Sep 2016
Posts: 54
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| Posted: Apr 03, 2018 13:40 Post subject: Re: Baryte collection of Niels Brouwer |
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You're completely right, Andreas. I've only recently found out that any attributions to the Lanwehr quarry are incorrect, even though I've seen a fair number labeled as such independently from one another at shows and online. It was already on my to do list to notify the admin team over on Mindat about this, so thanks for reminding me!
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Niels Brouwer
Joined: 26 Sep 2016
Posts: 54
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| Posted: Apr 19, 2018 18:09 Post subject: Re: Baryte collection of Niels Brouwer |
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Some more baryte from France and Italy.
| Mineral: | Baryte |
| Locality: | | Les Bains, Saint-Georges-les-Bains, La Voulte-sur-Rhône, Tournon-sur-Rhône, Ardèche, Auvergne-Rhône-Alpes, France | |
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| Dimensions: | 11 x 7 x 6 cm |
| Description: |
| Group of relatively large baryte crystals with very distinct zoning, ranging from a transparent blue core to a more cream white rougher outer layer. It was a fun challenge to get the lighting in the photo just right to show the contrast between the transparent and more opaque layers. |
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| Viewed: |
56928 Time(s) |
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| Mineral: | Baryte |
| Locality: | | Barega Mine, Gonnesa, Sud Sardegna Province, Sardinia/Sardegna, Italy | |
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| Dimensions: | 5,6 x 5,0 x 3,5 cm |
| Description: |
| Nicely freestanding tabular, white to transparent baryte crystals with a contrasting light grey band along the edges. |
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| Viewed: |
56923 Time(s) |
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| Mineral: | Baryte, Dolomite |
| Locality: | | Sasso Rosso, Rio di Mozzana, Burzanella, Camugnano, Bologna Province, Emilia-Romagna, Italy | |
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| Dimensions: | 8,5 x 6,0 x 3,6 cm |
| Description: |
| Old specimen of baryte from Northern Italy. Shiny water-clear crystals up to 5 mm scattered along hydrothermal veins, on a sedimentary rock. In paragenesis with lenticular crystals of dolomite. |
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56937 Time(s) |
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| Mineral: | Baryte, Dolomite |
| Locality: | | Sasso Rosso, Rio di Mozzana, Burzanella, Camugnano, Bologna Province, Emilia-Romagna, Italy | |
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| Dimensions: | 8,5 x 6,0 x 3,6 cm |
| Description: |
| Close-up of the same specimen. |
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| Viewed: |
56982 Time(s) |
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| Mineral: | Baryte, Hemimorphite |
| Locality: | | San Giovanni Mine, Punta della Torre, Iglesias, Sud Sardegna Province, Sardinia/Sardegna, Italy | |
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| Dimensions: | 8,5 x 6,0 x 6,0 cm |
| Description: |
| Intergrown brown to grey baryte, hosting a second generation of long thin tabular baryte with a more transparent milky colour. In several places, small sprays of hemimorphite have grown across the surface of the baryte. |
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| Viewed: |
56938 Time(s) |
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| Mineral: | Baryte, Hemimorphite |
| Locality: | | San Giovanni Mine, Punta della Torre, Iglesias, Sud Sardegna Province, Sardinia/Sardegna, Italy | |
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| Dimensions: | 8,5 x 6,0 x 6,0 cm |
| Description: |
| Close-up showing the different generations of baryte and hemimorphite spray. |
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| Viewed: |
56970 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4248
Location: Germany
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| Posted: Apr 21, 2018 02:38 Post subject: Re: Baryte collection of Niels Brouwer |
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| Wonderful specimens and really good photos, Niels, please more! :-)
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Firmo Espinar
Joined: 05 Apr 2017
Posts: 777
Location: Medellín, Colombia.
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| Posted: Apr 23, 2018 06:49 Post subject: Re: Baryte collection of Niels Brouwer |
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Very nice specimens from San Giovanni Mine, Sardinia / Sardegna, Italy.
Congratulations Niels.
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Niels Brouwer
Joined: 26 Sep 2016
Posts: 54
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| Posted: Jun 01, 2018 15:21 Post subject: Re: Baryte collection of Niels Brouwer |
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| Tobi wrote: | | Wonderful specimens and really good photos, Niels, please more! :-) |
| franjungle wrote: | Very nice specimens from San Giovanni Mine, Sardinia / Sardegna, Italy.
Congratulations Niels. |
Thanks for your comments guys! I'm glad you enjoy them.
Time for a new update, once more from the famous Grube Clara in the Black Forest in Germany. I find it fascinating how many different colours, forms, habits and sizes of baryte crystals have been found there over the years, due to the many successive phases of geological activity at this locality.
| Mineral: | Baryte |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 6,5 x 5,5 x 4,0 cm |
| Description: |
| Translucent baryte crystals with a subtle shade of pink, many of which are double terminated. |
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| Viewed: |
27503 Time(s) |
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| Mineral: | Baryte |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 8,1 x 5,6 x 4,5 cm |
| Description: |
| Rather unusual radiating formation of slender pink 'Meißelspat' baryte crystals, partly covered by a white outer layer. Amongst the radial baryte crystals are some double ended ones that formed in a different orientation. |
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| Viewed: |
27497 Time(s) |
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| Mineral: | Baryte |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 8,1 x 5,6 x 4,5 cm |
| Description: |
| Close-up of previous image. |
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| Viewed: |
27502 Time(s) |
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| Mineral: | Baryte, Goethite |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 5,7 x 4 x 3,8 cm |
| Description: |
| Stack of clear parallel blocky baryte crystals, included with intricate 'clouds' of goethite. |
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| Viewed: |
27513 Time(s) |
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| Mineral: | Baryte, Goethite |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 5,7 x 4 x 3,8 cm |
| Description: |
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| Viewed: |
27542 Time(s) |
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| Mineral: | Baryte |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 8 x 6 x 3 cm |
| Description: |
| Freestanding baryte crystals up to 6 cm with interesting parallel growth patterns with a nice contrast between the greyish blue centre and orange ends. |
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| Viewed: |
27479 Time(s) |
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| Mineral: | Baryte |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 7,5 x 4,6 x 4,2 cm |
| Description: |
| Lustrous, transparent baryte grown on a coarse white baryte matrix. Quite a challenge to photograph. |
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| Viewed: |
27522 Time(s) |
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| Mineral: | Baryte, Goethite |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 4 x 2 x 1 cm |
| Description: |
| Some baryte crystals, heavily included with black and brown goethite. One of the crystals has an interesting tan-coloured termination, somewhat reminiscent of a clenched fist with the index finger pointing upwards. |
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| Viewed: |
27526 Time(s) |
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| Mineral: | Baryte |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 9,3 x 8 x 2,5 cm |
| Description: |
| Thin plate consisting of honey-coloured baryte crystals. The second photo shows the interesting phantoms and crystal habit in more detail. |
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| Viewed: |
27481 Time(s) |
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| Mineral: | Baryte |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 9,3 x 8 x 2,5 cm |
| Description: |
| Close-up of the phantoms within the crystals. |
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| Viewed: |
27481 Time(s) |
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| Mineral: | Baryte |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 6,7 x 4,2 x 2,8 cm |
| Description: |
| Upstanding baryte crystal var. 'Meißelspat' (chisel spar). The front face of the main crystal is covered by a second generation of smaller crystals. |
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| Viewed: |
27520 Time(s) |
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| Mineral: | Baryte, Fluorite, Quartz |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 7,3 x 6,6 x 4,9 cm |
| Description: |
| Clear quartz and cubic fluorite on a base of tabular white baryte. |
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| Viewed: |
27507 Time(s) |
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| Mineral: | Baryte, Fluorite |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 11,3 x 6,6 x 5,8 cm |
| Description: |
| Clear cubic fluorite on white tabular baryte, which in turn is covered in a dark layer of goethite. |
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| Viewed: |
27547 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4248
Location: Germany
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| Posted: Jun 10, 2018 01:54 Post subject: Re: Baryte collection of Niels Brouwer |
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| Great samples from one of Germany's most famous mines, Niels!
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Niels Brouwer
Joined: 26 Sep 2016
Posts: 54
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| Posted: Oct 03, 2018 16:35 Post subject: Re: Baryte collection of Niels Brouwer |
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Picking up where I left off last time, I have two more baryte specimens from Grube Clara I wanted to share.
| Mineral: | Baryte |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 14,4 x 12,3 x 10,2 cm |
| Description: |
Grube Clara is not only famous for the remarkable number of different mineral species that have been found over the years, it has also produced an astonishing variety of baryte specimens. This diversity, both in species and baryte habits, can be attributed to three main consecutive phases of hydrothermal activity. The baryte from this first period is known as 'Messerspat', or 'knife spar', and is easily distinguished by the thin white tabular habit. In later hydrothermal phases, this primary baryte partially dissolved and was redeposited as 'Honigspat' and 'Meißelspat' respectively. The former, 'honey spar', is characterised by the yellow colour reminiscent of honey. The latter, 'chisel spar', is usually clear, although it very often displays brown, orange and yellow phantoms and appears in a multitude of different habits.
This specimen shows a relatively rare example in which all three types are present. The white matrix consists of the first phase, showing the tabular habit in the cross section (although no complete crystals are present). This is covered by more blocky yellow baryte from the second phase, that partially shows parallel growth to the first generation. The second baryte layer has been covered by black manganese oxides, before the third generation of baryte grew on top of it all. The third generation features the largest crystals, ranging from clear to orange due to inclusions. This very distinctive habit is sometimes referred to as 'Walmdach'-habit, as they resemble the shape of the roofs of the vernacular Black Forest farm houses. Some empty space can be observed in places between the second and third generations, indicating that some other mineral or pocket clay has been dissolved away. Finally, some of the third generation crystals also show marks where their growth was impeded by a now disappeared mineral. |
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| Viewed: |
26394 Time(s) |
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| Mineral: | Baryte |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 14,4 x 12,3 x 10,2 cm |
| Description: |
| Cloase-up of the third generation baryte crystals. |
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| Viewed: |
26320 Time(s) |
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| Mineral: | Baryte |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 14 x 7 x 6 cm |
| Description: |
| Pointed chisel-shaped crystals showing some interesting phantoms. Part of these phantoms is formed by the usual yellow zoning that you see more often in baryte from Grube Clara. However, in this case the crystals partially have inclusions of coarser brown grains, similar to the matrix on which the crystals have grown. |
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| Viewed: |
26331 Time(s) |
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| Mineral: | Baryte |
| Locality: | | Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany | |
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| Dimensions: | 14 x 7 x 6 cm |
| Description: |
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| Viewed: |
26345 Time(s) |
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Niels Brouwer
Joined: 26 Sep 2016
Posts: 54
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| Posted: Oct 03, 2018 17:33 Post subject: Re: Baryte collection of Niels Brouwer |
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Personally, I find that I can appreciate mineral specimens even more when I'm familiar with the surroundings in which they have been found. As I live quite close to the German border here in the Netherlands, I've spent quite a few holidays and business trips all across Germany, and visited a fair number of the famous baryte mines. For me, the often stunning beauty of the surrounding landscapes this country has to offer, combined with the wealth of mining history adds a lot of context and character to a any specimen. I guess that's why German baryte always is always a favourite of mine.
| Mineral: | Baryte |
| Locality: | | Elisabeth Spat vein, Tiefer Gideon adit, Großolbersdorf, Marienberg, Erzgebirgskreis, Saxony/Sachsen, Germany | |
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| Dimensions: | 5,2 x 3,4 x 1,7 cm |
| Description: |
| Doubly terminated baryte crystals to 29 mm, with the colour ranging from a subtle clear blue to a orange-red. |
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| Viewed: |
26313 Time(s) |
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| Mineral: | Baryte, Chalcopyrite |
| Locality: | | Dreislar Mine, Dreislar, Winterberg, Sauerland, North Rhine-Westphalia/Nordrhein-Westfalen, Germany | |
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| Dimensions: | 7,5 x 4 x 2 cm |
| Description: |
| Relatively large, wafer-thin freestanding blade of baryte. Small golden chalcopyrite crystals are scattered across its surface, with a few smaller baryte blades along the edges. Quite an unusual specimen compared with the instantly recognisable specimens that are normally seen from this classic locality. |
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| Viewed: |
26301 Time(s) |
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| Mineral: | Baryte, Fluorite |
| Locality: | | Finstergrund Mine, Wieden (Schwarzwald), Lörrach, Freiburg, Baden-Württemberg, Germany | |
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| Dimensions: | 17,1 x 12,4 x 7,4 cm |
| Description: |
| Large plate of baryte matrix consisting of fine beige blades, hosting a number of yellow cubic fluorite crystals. |
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| Viewed: |
26316 Time(s) |
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| Mineral: | Baryte, Native silver |
| Locality: | | Adit no. 7, Oberpfannenstiel, Lauter-Bernsbach, Erzgebirgskreis, Saxony/Sachsen, Germany | |
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| Dimensions: | 2,8 x 2,3 x 1,8 cm |
| Description: |
| This time the baryte itself isn't necessarily the main attraction, but instead hosts wonderfully intricate dendrites of native silver. |
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| Viewed: |
26316 Time(s) |
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Niels Brouwer
Joined: 26 Sep 2016
Posts: 54
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| Posted: Oct 03, 2018 17:49 Post subject: Re: Baryte collection of Niels Brouwer |
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Continuing the German series with more baryte from a very prolific mining area. The Erzgebirge (Ore Mountains in English), the name says it all. In the context of what I wrote in my previous post, I've never been to this eastern region, so it is still very high on my wish list of places to visit.
| Mineral: | Baryte, Fluorite |
| Locality: | | Uranus Mine, Letzte Hoffnung Stehender vein, Kleinrückerswalde, Annaberg-Buchholz, Annaberg District, Erzgebirgskreis, Saxony/Sachsen, Germany | |
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| Dimensions: | 6,9 x 4,0 x 2,8 cm |
| Description: |
| Two golden yellow baryte crystals on heavily etched fluorite. The sides of the fluorite reveal nice yellow and purple zoning. Green specks of what appears to be weathered chalcopyrite are distributed across the surface of the fluorite, would need analysis to determine the exact species. |
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| Viewed: |
26301 Time(s) |
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| Mineral: | Baryte |
| Locality: | | Frisch Glück adit (Adit 134), Bergmännisch Glück Flacher vein, Frohnau, Annaberg-Buchholz, Annaberg District, Erzgebirgskreis, Saxony/Sachsen, Germany | |
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| Dimensions: | 2,8 x 2,3 x 1,8 cm |
| Description: |
| Clear golden prismatic baryte entirely covering the fluorite matrix. The baryte shows beautiful yellow fluorescence under long wave UV light. |
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| Viewed: |
26342 Time(s) |
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| Mineral: | Baryte, Fluorite |
| Locality: | | Frisch Glück adit (Adit 134), Bergmännisch Glück Flacher vein, Frohnau, Annaberg-Buchholz, Annaberg District, Erzgebirgskreis, Saxony/Sachsen, Germany | |
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| Dimensions: | 5.7 cm x 4.8 cm x 2.3 cm |
| Description: |
| Wonderful combination of yellow prismatic baryte on yellow cubic fluorite with beautiful purple zoning. Small purple fluorite and golden chalcopyrite are scattered across the surface of the fluorite. The baryte shows a nice yellow fluorescence under long wave UV light. |
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| Viewed: |
26336 Time(s) |
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| Mineral: | Baryte, Quartz |
| Locality: | | Pöhla-Tellerhäuser Mine, Pöhla, Schwarzenberg District, Erzgebirgskreis, Saxony/Sachsen, Germany | |
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| Dimensions: | 8,2 x 5,9 x 1,9 cm |
| Description: |
| Remarkably clear golden yellow baryte crystals to 10 mm on a quartz matrix. I find the thin plate of matrix fascinating too, as the epimorphic underside shows the very distinct shape of cubic fluorite. The baryte has grown on both sides of the quartz plate, which must have taken place after the fluorite had been dissolved away. Dark specs of chalcopyrite and a touch of red from a hematite layer adds further contrast to the specimen. |
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| Viewed: |
26330 Time(s) |
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| Mineral: | Baryte, Quartz |
| Locality: | | Pöhla-Tellerhäuser Mine, Pöhla, Schwarzenberg District, Erzgebirgskreis, Saxony/Sachsen, Germany | |
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| Dimensions: | 8,2 x 5,9 x 1,9 cm |
| Description: |
| Reverse side, showing the clear fluorite epimorphs. |
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| Viewed: |
26295 Time(s) |
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| Mineral: | Baryte, Quartz |
| Locality: | | Pöhla-Tellerhäuser Mine, Pöhla, Schwarzenberg District, Erzgebirgskreis, Saxony/Sachsen, Germany | |
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| Dimensions: | 8,2 x 5,9 x 1,9 cm |
| Description: |
| Close-up of the clear golden baryte right on the side of the quartz. |
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| Viewed: |
26327 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4248
Location: Germany
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| Posted: Oct 07, 2018 04:07 Post subject: Re: Baryte collection of Niels Brouwer |
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A wonderful collection of German barite classics. As a German collector, minerals from Germany are among my favourites, also, barite is becoming more and more a mineral that I like. So I really enjoy your gallery, the more because your photo quality is superb!
Sehr schön, weiter so :-)
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Niels Brouwer
Joined: 26 Sep 2016
Posts: 54
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| Posted: Oct 12, 2018 09:04 Post subject: Re: Baryte collection of Niels Brouwer |
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| Tobi wrote: | A wonderful collection of German barite classics. As a German collector, minerals from Germany are among my favourites, also, barite is becoming more and more a mineral that I like. So I really enjoy your gallery, the more because your photo quality is superb!
Sehr schön, weiter so :-) |
Thanks again for your comments, Tobi. I hope you won't be too disappointed if I switch to posting different countries every now and then. ;)
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Niels Brouwer
Joined: 26 Sep 2016
Posts: 54
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| Posted: Dec 03, 2018 10:08 Post subject: Re: Baryte collection of Niels Brouwer |
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A couple of Italian barytes from the wide range of variations that Sardinia has produced over the years.
| Mineral: | Baryte |
| Locality: | | Monte Onixeddu Mine, Gonnesa, Sud Sardegna Province, Sardinia/Sardegna, Italy | |
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| Dimensions: | 9,6 x 8,9 x 6,0 cm |
| Description: |
| Large cluster of lustrous, clear to honey-coloured baryte crystals. |
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| Viewed: |
25942 Time(s) |
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| Mineral: | Baryte |
| Locality: | | San Giovanni Mine, Punta della Torre, Iglesias, Sud Sardegna Province, Sardinia/Sardegna, Italy | |
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| Dimensions: | 10,9 x 9,0 x 5,2 cm |
| Description: |
| During mining works in the San Giovanni Mine, they came across a vast cave system with walls covered in pointy brown baryte crystals. Only a few specimens ever came out due to protection of the cave soon after discovery. |
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| Viewed: |
25832 Time(s) |
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| Mineral: | Baryte |
| Locality: | | San Giovanni Mine, Punta della Torre, Iglesias, Sud Sardegna Province, Sardinia/Sardegna, Italy | |
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| Description: |
| Close-up of the same specimen, showing the layer of minute baryte blades that grew as a second generation on the sides of the larger crystals. |
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| Viewed: |
25851 Time(s) |
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