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Roger Warin
Joined: 23 Jan 2013
Posts: 1175
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 Posted: Aug 01, 2014 16:13 Post subject: Re: Collection of Michael Shaw |
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Hi,
Congratulations to your excellent cafarsite.
Roger.
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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| Posted: Aug 01, 2014 16:17 Post subject: Re: Collection of Michael Shaw |
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Michael,
I really like your hematite 1009.
Don
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
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| Posted: Aug 01, 2014 16:23 Post subject: Re: Collection of Michael Shaw |
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| Martin Rich wrote: | Hello Michael!
Congratulations to your exellent specimens and photos! I like this Cornish Cerussite and especial the Hematite from the Cavradi gorge. Theo Vencin is a well known collector/"Strahler" here in Europe.
Martin |
Thank you Martin,
I was very happy to find the cerussite in Tucson last February. I had never seen one from that location at any of the shows I have attended.
I was reading the latest issue of Mineralogical Record, where there is a review of a new book on Cavradi. Mr. Venzin is mentioned as one of the authors. I will have to purchase a copy; it looks like it will be interesting reading.
Michael
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
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| Posted: Aug 01, 2014 16:26 Post subject: Re: Collection of Michael Shaw |
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| Thank you for your kind comments, Roger and Don.
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4102
Location: Germany
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| Posted: Aug 02, 2014 00:33 Post subject: Re: Collection of Michael Shaw |
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Hi Michael,
I agree with our guys, you really do a good job in showing minerals both from famous localities and from places rather unknown (especially in the U.S.), one of my favourites is the wonderful pyrite from a Pennsylvanian locality I never heard of ( https://www.mineral-forum.com/message-board/viewtopic.php?p=40372#40372 ), I like the cubic crystals on matrix.
Great stuff, please more!
Tobi
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
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| Posted: Aug 02, 2014 07:53 Post subject: Re: Collection of Michael Shaw |
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| Tobi wrote: | Hi Michael,
i agree with our guys, you really do a good job in showing minerals both from famous localities and from places rather unknown (especially in the U.S.), one of my favourites is the wonderful pyrite from a Pennsylvanian locality I never heard of ( https://www.mineral-forum.com/message-board/viewtopic.php?p=40372#40372 ), I like the cubic crystals on matrix.
Great stuff, please more!
Tobi |
Many thanks, Tobi. The French Creek mines, where the pyrite is from, is a well-known U.S. locality, but has been defunct for nearly 90 years. Iron ore was discovered there in 1845, but the ore was mostly exhausted by 1926, and the mines closed in 1928. Specimens of chalcopyrite, pyrite, and magnetite from French Creek are often seen in old U.S. collections, but probably less so outside the U.S. An interesting side note is the fact that Charles Wheatley, the mine manager at the famous Wheatley Mines in Chester County, owned the Jones Mine, one of the two mines at French Creek.
Michael
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
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| Posted: Aug 06, 2014 10:05 Post subject: Re: Collection of Michael Shaw |
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A few pieces from Turkey.
| Description: |
Chalcanthite
Murgul Cu-Zn-Pb deposit, Murgul, Artvin Province, Black Sea Region, Turkey
5.5 x 7.0 cm
A bright blue botryoidal crust of chalcanthite. |
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28761 Time(s) |
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| Description: |
Pyrite
Murgul Cu-Zn-Pb deposit, Murgul, Artvin Province, Black Sea Region, Turkey
6.0 x 6.5 cm
Sharp brassy octahedral crystals of pyrite to 1.5 cm on a massive pyrite matrix. |
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28718 Time(s) |
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Clinochlore var. kammererite
Kop Krom mine, Kop Daglari, Erzurum Province, Eastern Anatolia Region, Turkey
5.3 x 8.0 cm, FOV ~ 1.5 cm
Sharp reddish-purple chromian clinochlore crystals to 0.4 cm scattered over a thin layer of micro clinochlore crystals on a dark gray chromite matrix |
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28884 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1175
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| Posted: Aug 06, 2014 15:20 Post subject: Re: Collection of Michael Shaw |
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Fine kammererite.
Roger.
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Susan Robinson
Joined: 05 Aug 2010
Posts: 163
Location: Hancock, MI
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| Posted: Aug 06, 2014 15:22 Post subject: Re: Collection of Michael Shaw |
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I thought the name kammererite was changed to chromian clinochlore.
Susan Robinson
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
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| Posted: Aug 06, 2014 15:52 Post subject: Re: Collection of Michael Shaw |
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| Susan Robinson wrote: | I thought the name kammererite was changed to chromian clinochlore.
Susan Robinson |
Hi Susan,
It may well have been changed, it's hard to keep up with all the name changing these days. I checked the most recent Fleischers that I have (2008) and neither chromian clinochlore or kammererite is listed as a variety of clinochlore. That being said, most longtime collectors still know this colorful mineral by the name that Nils Gustaf Nordenskiöld gave it in 1841 in honor of August Alexander Kämmerer.
Michael
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
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| Posted: Aug 11, 2014 13:10 Post subject: Re: Collection of Michael Shaw |
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Minerals from the Ukraine.
| Description: |
Cummingtonite
Krivoy Rog, Dnipropetrovs'k Oblast, Ukraine
6.0 x 8.7 cm
Fine acicular silver-gray crystals frozen in dark slate-gray matrix. Ex. Fersman Museum. |
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28554 Time(s) |
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| Description: |
Vivianite
Kamysh-Burun Trough, Kerchenskoe deposit, Crimea Peninsula, Crimea Oblast, Ukraine
5.6 x 6.3 cm
Sprays of dark green bladed vivianite resting on a thin layer of oolitic black limonite covering a brown gossan matrix. |
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| Viewed: |
28588 Time(s) |
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| Description: |
Beryl var. heliodor
Volodarsk-Volynskii, Zhytomyr Oblast, Ukraine
1.3 x 5.5 cm
Gemmy, doubly-terminated heliodor crystal showing the complex etching pattern typical of this locale. |
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28576 Time(s) |
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| Description: |
Vivianite
Kamysh-Burun Trough, Kerchenskoe deposit, Crimea Peninsula, Crimea Oblast, Ukraine
6.4 x 7.7 cm
Lustrous dark green spearlike vivianite crystals lining a shallow cavity in the shell of a fossil bivalve. |
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28610 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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| Posted: Aug 11, 2014 13:27 Post subject: Re: Collection of Michael Shaw |
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I like your Heliodor from the Ukraine, Michael. Great color and etched surface and terminations.
Don
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
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| Posted: Aug 11, 2014 14:42 Post subject: Re: Collection of Michael Shaw |
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| Don Lum wrote: | I like your Heliodor from the Ukraine, Michael. Great color and etched surface and terminations.
Don |
Thanks Don. If you have Min. Record Vol. 40, #6, there is a good article about the pegmatites where these heliodors were found. Photos of some of the finer and larger crystals are fantastic.
Regards,
Michael
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
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| Posted: Aug 14, 2014 09:25 Post subject: Re: Collection of Michael Shaw |
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A few minerals from South Africa.
| Description: |
Corundum
Zoutpansburg, Gauteng Province, South Africa
3.2 x 6.5 cm
A doubly-terminated hexagonal prism of gray corundum with pinacoid terminations. |
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| Viewed: |
28377 Time(s) |
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| Description: |
Quartz
Messina Mine, Messina, Limpopo Province, South Africa
6.0 x 7.3 cm
Doubly-terminated quartz crystals colored reddish-brown by inclusions of hematite with micro black hematite crystals coating several prism faces. |
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| Viewed: |
28409 Time(s) |
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| Description: |
Papagoite
Messina Mine, Messina, Limpopo Province, South Africa
3.0 x 6.8 cm
Blue papagoite and black hematite inclusions in quartz associated with drusy green epidote. |
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28452 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
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| Posted: Aug 22, 2014 10:27 Post subject: Re: Collection of Michael Shaw |
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A few more from South Africa.
| Mineral: | Bultfonteinite |
| Locality: | | N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa |  |
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| Dimensions: | 5.5 x 10.0 cm FOV ~ 4.0 cm |
| Description: |
| Bowtie groups of acicular bultfonteinite crystals scattered among blocky, beige-colored olmiite crystals on dark matrix. |
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28314 Time(s) |
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| Mineral: | Quartz var. amethyst |
| Locality: | | Boekenhoutshoek area, Mkobola, Nkangala District, Mpumalanga Province, South Africa | |
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| Dimensions: | 6.5 x 7.5 cm |
| Description: |
| Lilac-colored amethyst crystals with prism faces overgrown by small amethyst crystals, locally known as "cactus quartz." |
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28310 Time(s) |
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| Mineral: | Siderite ps. calcite |
| Locality: | | Broken Hill Mine, Aggeneys, Namakwa District (Namaqualand), Northern Cape Province, South Africa | |
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| Dimensions: | 4.3 x 5.1 cm |
| Description: |
| Barrel-shaped, hollow, brown siderite epimorph of a calcite crystal. Microprobe analysis has shown sphalerite to be present as well. |
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| Viewed: |
28250 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
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| Posted: Aug 27, 2014 10:31 Post subject: Re: Collection of Michael Shaw |
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A few specimens from Poland.
| Locality: | | Wieliczka Mine, Wieliczka, Małopolskie, Poland | |
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| Dimensions: | 4.1 x 5.4 cm |
| Description: |
| Colorless cubic halite crystals to 3 cm. This mine has been in operation for over 700 years. It contains over 2100 chambers and 4 chapels decorated entirely of salt. Unesco lists it as one of the top 12 world attractions. |
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28165 Time(s) |
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| Locality: | | Solno Mine, Inowrocław, Kujawsko-Pomorskie, Poland | |
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| Dimensions: | 5.0 x 6.3 cm |
| Description: |
| Large water-clear cubic crystal exhibiting stepped growth. |
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| Viewed: |
28179 Time(s) |
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| Mineral: | Gypsum |
| Locality: | | Machów Mine, Tarnobrzeg, Subcarpathian Voivodeship, Poland | |
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| Dimensions: | 4.0 x 6.5 cm |
| Description: |
| Slender, pale yellow to colorless gypsum crystals many of which are included or coated with black microscopic, spherical aggregates of hauerite. |
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| Viewed: |
28146 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
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| Posted: Aug 29, 2014 09:29 Post subject: Re: Collection of Michael Shaw |
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More from Poland.
| Mineral: | Celestine on Sulphur |
| Locality: | | Machów Mine, Tarnobrzeg, Subcarpathian Voivodeship, Poland | |
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| Dimensions: | 7.0 x 9.3 cm |
| Description: |
| Water-clear celestine crystals to 1.1 cm on a matrix of drusy yellow Sulphur. |
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| Viewed: |
28017 Time(s) |
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| Mineral: | Sulphur |
| Locality: | | Machów Mine, Tarnobrzeg, Subcarpathian Voivodeship, Poland | |
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| Dimensions: | 5.0 x 7.0 cm |
| Description: |
| Bright yellow Sulphur crystals to 1.5 cm on a layer of small gray calcite crystals. |
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| Viewed: |
27988 Time(s) |
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| Mineral: | Celestine |
| Locality: | | Machów Mine, Tarnobrzeg, Subcarpathian Voivodeship, Poland | |
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| Dimensions: | 6.0 x 6.5 cm |
| Description: |
| A group of needle-shaped, amber-colored celestine crystals associated with traces of powdery yellow Sulphur. |
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| Viewed: |
27981 Time(s) |
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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| Posted: Aug 29, 2014 10:42 Post subject: Re: Collection of Michael Shaw |
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I like this last celestine Michael!
_________________
Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
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| Posted: Aug 29, 2014 17:16 Post subject: Re: Collection of Michael Shaw |
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| Pierre Joubert wrote: | | I like this last celestine Michael! |
Thanks Pierre,
What's interesting is the varied morphology and color of celestine from this deposit. The crystals can be thick and blocky to needle-like, and they can vary in color from water-clear, to white, amber, and blue.
Michael
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
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| Posted: Sep 01, 2014 09:33 Post subject: Re: Collection of Michael Shaw |
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The last few from Poland.
| Mineral: | Barite |
| Locality: | | Stanisławów, Jawor District, Lower Silesia, Poland | |
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| Dimensions: | 1.9 x 2.4 cm |
| Description: |
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| Viewed: |
27982 Time(s) |
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| Mineral: | Sphalerite, wurtzite, galena, and marcasite |
| Locality: | | Olkusz Mine, Olkusz, Olkusz District, Małopolskie, Poland | |
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| Dimensions: | 4.2 x 8.5 cm |
| Description: |
| A polished slab of "schalenblende" showing layers of sphalerite-wurtzite (brown and yellow bands) as well as galena (gray), and perhaps some marcasite. |
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| Viewed: |
27899 Time(s) |
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| Locality: | | Olkusz Mine, Olkusz, Olkusz District, Małopolskie, Poland | |
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| Dimensions: | 5.6 x 9.0 cm |
| Description: |
| Sharply-formed, octahedral galena crystals to 2.5 cm with scattered crystals of brownish sphalerite. |
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| Viewed: |
27824 Time(s) |
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