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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Nov 23, 2016 11:47 Post subject: Re: Munich Show (Mineralientage) 2016 |
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Hi,
Quartz crystals can be found distorted by twisting around an a-axis, perpendicular to the usual c-elongation.
These vicinal crystals can be placed next to another step by step or in a continuous manner, thus creating curved faces.
Ultimately, individuals are no longer discernible and the whole resemble a sugar, as the French say. In Switzerland, these twisted quartz are called Gwindels. They may be partially or totally closed.
Mineral: | Quartz (variety gwindel) |
Locality: | Oberalp Pass area, Tujetsch (Tavetsch), Vorderrhein Valley, Grischun (Grisons; Graubünden), Switzerland | |
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Mineral: | Quartz (variety gwindel) |
Locality: | Val Giuv, Tujetsch (Tavetsch), Vorderrhein Valley, Grischun (Grisons; Graubünden), Switzerland | |
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dontgogreen
Joined: 02 Aug 2015
Posts: 79
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Posted: Nov 23, 2016 16:55 Post subject: Re: Munich Show (Mineralientage) 2016 |
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Wow, who had that smoky gwindel from Tujetsch? It's wonderful.
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Nov 23, 2016 22:55 Post subject: Re: Munich Show (Mineralientage) 2016 |
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and also
Mineral: | Quartz |
Locality: | Ruinó Valley, Bedretto Valley, Leventina, Ticino (Tessin), Switzerland | |
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Mineral: | Quartz |
Locality: | Taquaral, Itinga, Jequitinhonha, Minas Gerais, Brazil | |
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Rose quartz on smoky quartz |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Nov 24, 2016 09:38 Post subject: Re: Munich Show (Mineralientage) 2016 |
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Spodumene: unalterable lithic silicate, colored ash, hence its Greek name.
It has the structure of the diopside. It belongs to the group of clinopyroxenes.
It does not form solid solutions (Li atom too small).
Crystals can be large.
There are 2 varieties of gemstones, pink kunzite and green hiddenite
Mineral: | Spodumene (variety hiddenite) |
Locality: | Resplendor, Aimorés, Vale do Rio Doce, Minas Gerais, Brazil | |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Nov 24, 2016 10:11 Post subject: Re: Munich Show (Mineralientage) 2016 |
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Other nice minerals.
Mineral: | Dioptase |
Locality: | Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia | |
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Mineral: | Epidote |
Locality: | Haramosh Mountains, Baltistan District, Gilgit-Baltistan (Northern Areas), Pakistan | |
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Mineral: | Halite |
Locality: | PCA Mine (Intrepid Potash Mine; HB Potash Mine), Carlsbad Potash District, Eddy County, New Mexico, USA | |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Nov 25, 2016 09:02 Post subject: Re: Munich Show (Mineralientage) 2016 |
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Some tanzanites
Mineral: | Tanzanite |
Locality: | Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania | |
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Locality: | Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania | |
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Mineral: | Tanzanite |
Locality: | Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania | |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Nov 25, 2016 10:25 Post subject: Re: Munich Show (Mineralientage) 2016 |
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There was obviously a lot of tourmalines.
Mineral: | Elbaite (Tourmaline Group) |
Locality: | Tourmaline Queen Mine, Tourmaline Queen Mountain, Montaña Tourmaline Queen, Pala, Pala District, San Diego County, California, USA | |
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Mineral: | Elbaite (Tourmaline Group) |
Locality: | Deo Darrah, Khash & Kuran Wa Munjan Districts, Badakhshan Province, Afghanistan | |
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Mineral: | Elbaite (Tourmaline Group) |
Locality: | Pederneira claim, São José da Safira, Governador Valadares, Vale do Rio Doce, Minas Gerais, Brazil | |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4899
Location: Barcelona
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Posted: Nov 26, 2016 14:25 Post subject: Re: Munich Show (Mineralientage) 2016 - The New Discoveries |
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On Munich Show (Mineralientage) 2016 - The New Discoveries Jordi Fabre wrote: | ...Let's go to what I have seen mineralogical. As announced, the real new discoveries have been very few, but something new always appears... Apart from the already mentioned Brochantites with or without Chrysocolla and with or without the Atacamite from the Los Azules Mine, Chile, in Morocco Imilchil remains generous and there have been many and varied things found there, highlighted by new spherical Malachite on Chrysocolla, very curious (assuming they really are from Imilchil). Bou Nahas remains prolific and produces among many other things some very nice lemon-yellow Barite with very thick crystals, and also highlighted was the presence for the first time (to my knowledge) of crystallized Cuprites from there. Bouismas and Tamdrost still are giving generously good Silvers and Proustites and Chebka Sidi Said (Aouli) has given very good yellow Fluorite on reddish Quartz and unlike the usual, in large pieces.
An exciting novelty was the presentation of Machinga, a locality in Malawi that although vaguely known in the past, now is being exploited again and giving (for now) excellent Niobophyllites and Eudidymites with thick, well-formed crystals between translucent and transparent. We'll see what will happen in the future but if all goes well it could be a new Mount Malosa.
I would also highlight the recent appearance in the classic Naipa mine, Mozambique, multicolored tourmalines very similar to those of the Santa Rosa mine in Brazil and the reappearance there of world class Stibiotantalites. Also I would like point out the continued presence of very aesthetic Pyrites from the "Atahualpa" level in the Huanzalá mine, Peru. They would surely be the most beautiful in the world if it were not the large amount of damage on the edges of the crystals that occur during the extraction of these specimens... |
I'm adding some images of the new discoveries I described on my previous post.
Mineral: | Malachite on Chrysocolla |
Locality: | Imilchil area, Anti-Atlas, Er Rachidia Province, Drâa-Tafilalet Region, Morocco | |
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Dimensions: | 9.5 × 6.7 × 6.9 cm |
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Mineral: | Fluorite with Quartz |
Locality: | Chebka Sidi Said, Midelt Province, Drâa-Tafilalet Region, Morocco | |
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Dimensions: | 6.7 × 4.2 × 4.6 cm |
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Main crystal size: 2.5 × 2.5 cm Fluorescent long & short UV Mined in September 2016 |
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Mineral: | Proustite on Calcite |
Locality: | Bouismas Mine, Agdz, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region, Morocco | |
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Dimensions: | 7.8 × 5.2 × 3.6 cm |
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Main crystal size: 1.3 × 0.5 cm Mined in 2016 |
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Mineral: | Niobophyllite with Aegirine and Orthoclase |
Locality: | Machinga, Machinga District, Malawi | |
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Dimensions: | 4 × 3.7 × 2.6 cm |
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Main crystal size: 3.5 × 1 cm Mined in 2016 |
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Mineral: | Elbaite |
Locality: | Naipa Mine, Alto Ligonha pegmatite, Zambezia Province, Mozambique | |
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Dimensions: | 3.2 × 1.3 × 1.1 cm |
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Mineral: | Stibiotantalite |
Locality: | Naipa Mine, Alto Ligonha pegmatite, Zambezia Province, Mozambique | |
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Dimensions: | 2.6 × 2.5 × 1.5 cm |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4108
Location: Germany
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Posted: Nov 27, 2016 02:04 Post subject: Re: Munich Show (Mineralientage) 2016 |
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What a beautiful yellow fluorite from Chebka Sidi Said!!!
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Nov 28, 2016 09:46 Post subject: Re: Munich Show (Mineralientage) 2016 |
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And more,
Mineral: | Elbaite |
Locality: | Himalaya Mine, Gem Hill, Mesa Grande District, San Diego County, California, USA | |
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28764 Time(s) |
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Mineral: | Brazilianite |
Locality: | Linópolis, Divino das Laranjeiras, Vale do Rio Doce, Minas Gerais, Brazil | |
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Mineral: | Andradite |
Locality: | Belqeys Mountain, Takab, West Azerbaijan Province, Iran | |
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Mineral: | Mesolite |
Locality: | India | |
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Peter Van Hout
Joined: 13 Feb 2013
Posts: 39
Location: Flanders
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Posted: Nov 28, 2016 11:30 Post subject: Re: Munich Show (Mineralientage) 2016 |
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Thank you for posting all these mouth watering pictures Roger. I am now already counting down for next year show.
By the way the next year Munich special exhibition theme is called 'From mine to mine'. Any ideas what they exactly mean with that?
Peter
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Nov 28, 2016 15:15 Post subject: Re: Munich Show (Mineralientage) 2016 |
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The Munich Show is also the rendezvous of lovers of "normal" minerals.
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Nov 28, 2016 15:52 Post subject: Re: Munich Show (Mineralientage) 2016 |
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Hi Peter,
No I do not know the secret of the next exhibition.
What I know is that it will be a total success. The thematic exhibition of Munich itself is the worth of the trip. I have never been disappointed since 1977. It was there (and also in Ste Marie) that I learned what minerals were. It was an indispensable complement to all textbooks on Earth.
I would like to read the statements of all the former thematic exhibitions which have magnified the name of Munich.
Roger.
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Nov 28, 2016 16:10 Post subject: Re: Munich Show (Mineralientage) 2016 |
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Maybe since Agricola, Central Europe has the cult of miners' work.
Here are some miniatures inserted in bottles. Magic, isn't?
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Nov 30, 2016 04:43 Post subject: Re: Munich Show (Mineralientage) 2016 |
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Friederich Mohs
1773-1832
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Lithographic stone reversed engraving |
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Jamison Brizendine
Joined: 27 Feb 2014
Posts: 128
Location: Northeast Ohio
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Posted: Nov 30, 2016 13:06 Post subject: Re: Munich Show (Mineralientage) 2016 |
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These are some wonderful photos, I especially like the fluorites!
I did notice that one (127-Fluorite_20879_R.jpg) is labeled as coming from the Xiefang Mine. I have seen nearly identical ones that were labeled from the De'an Mine, also in Jiangxi Province. I don't know which of the two localities is the correct one for these unusual fluorites.
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Nov 30, 2016 13:46 Post subject: Re: Munich Show (Mineralientage) 2016 |
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Hi Jamison
About the 127-Fluorite_20879, here is its label.
Many thanks for your kind words.
Roger.
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Nov 30, 2016 17:08 Post subject: Re: Munich Show (Mineralientage) 2016 |
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Jean-Baptiste Louis Romé de l'Isle (August 26, 1736 – July 3, 1790) was a French mineralogist, considered one of the creators of modern crystallography.
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old typography "pour servir de suite" |
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cptbtptp248
Joined: 08 Nov 2016
Posts: 3
Location: paris
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Posted: Nov 30, 2016 22:35 Post subject: Re: Munich Show (Mineralientage) 2016 |
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Wow, It's great.What a beautiful yellow fluorite. I am looking forward the Munich special exhibition theme is called 'From mine to mine'.
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Roger Warin
Joined: 23 Jan 2013
Posts: 1176
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Posted: Dec 01, 2016 08:20 Post subject: Re: Munich Show (Mineralientage) 2016 |
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Strongly pleochroic iolite can display a blue to violet hue in one direction and pale yellow to colorless in another.
Iolite (gemologist term) is cordierite (mineralogy).
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