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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Feb 04, 2020 09:14 Post subject: Re: Collection of Michael Shaw |
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Tobi wrote: | Really wonderful Rogerley fluorite, Michael! |
Thanks Tobi. It even has one of our favorite minerals on the lower right edge.
Michael
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Feb 18, 2020 11:18 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Barite |
Locality: | Marsanges Mine, Pratclos (Pratclaux) vein, Langeac, Brioude, Haute-Loire, Auvergne-Rhône-Alpes, France | |
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Dimensions: | 4.0 cm x 7.3 cm |
Description: |
Compound chisel-shaped barite crystal with a brownish core and milky white outer zones from this former fluorite mine. |
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14695 Time(s) |
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Tobi
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Joined: 07 Apr 2009
Posts: 4108
Location: Germany
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Posted: Feb 19, 2020 04:30 Post subject: Re: Collection of Michael Shaw |
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Really elegant and beautiful barite, I like it :-)
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Feb 19, 2020 08:27 Post subject: Re: Collection of Michael Shaw |
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Tobi wrote: | Really elegant and beautiful barite, I like it :-) |
Thanks Tobi. I found several new barites in Tucson which we were able to add to our collection. One in particular that I am excited about is from the Clara Mine. I will post that one in the near future when I am able to get a good photo of it.
Michael
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Feb 24, 2020 16:42 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Barite |
Locality: | Lavrion Mining District, Attikí (Attica) Prefecture, Greece | |
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Dimensions: | 4.0 cm x 5.3 cm x 8.7 cm |
Description: |
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14534 Time(s) |
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Mar 04, 2020 16:02 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Fluorite |
Locality: | Mont Blanc Massif, Chamonix, Haute-Savoie, Auvergne-Rhône-Alpes, France | |
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Dimensions: | 2.0 x 2.4 cm |
Description: |
Fluorite with minor adularia. |
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14370 Time(s) |
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Niels Brouwer
Joined: 26 Sep 2016
Posts: 54
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Posted: Mar 04, 2020 19:32 Post subject: Re: Collection of Michael Shaw |
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Michael, how certain are you that that baryte specimen is from the Clara Mine? It's completely different from anything I've seen from that mine (which is an absolute paradise for a baryte collector like myself). I would have thought Lavrion in Greece would be far more likely if it hadn't been labelled as coming from the Clara.
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Michael Shaw
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Posts: 2069
Location: Oklahoma
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Posted: Mar 04, 2020 22:44 Post subject: Re: Collection of Michael Shaw |
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Niels Brouwer wrote: | Michael, how certain are you that that baryte specimen is from the Clara Mine? It's completely different from anything I've seen from that mine (which is an absolute paradise for a baryte collector like myself). I would have thought Lavrion in Greece would be far more likely if it hadn't been labelled as coming from the Clara. |
Niels, not certain at all - I acquired the barite from a German dealer and that is what his label stated. I did review all of the Clara Mine barite specimens on Mindat, and while I didn't find any that looked similar, it was apparent that the location produced numerous habits of barite. Thanks for the insight. I'll have a look at the Lavrion photos.
Michael
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Niels Brouwer
Joined: 26 Sep 2016
Posts: 54
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Posted: Mar 05, 2020 05:08 Post subject: Re: Collection of Michael Shaw |
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Yes, that immense diversity is the very reason why I was hesitant to categorically rule it out as coming from the Clara mine. I'm still completely surprised every single time I come across a few new habits, just when I thought I had seen them all. :D This particular habit however seems to be completely absent from this mine, regardless of colour and crystal size, hence my gut feeling why Greece would be a much better fit.
Anyway, thanks for sharing, I always really enjoy seeing your photos!
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Tobi
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Joined: 07 Apr 2009
Posts: 4108
Location: Germany
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Posted: Mar 05, 2020 05:20 Post subject: Re: Collection of Michael Shaw |
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Hi Michael, hi Niels, indeed a beautiful baryte, but I'm also doubtful: I have seen a lot Clara barytes and I also visited the Clara Mine Museum where you can see how many different crystal varieties occur there. But if this one is from Clara, not sure ... I agree with Niels who is much more baryte-educated than me, this is really not a typical Clara specimen but it doesn't look too strange to rule it out ... :-/
Maybe a little question mark on the label would do it?
Regards
Tobi
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Mar 05, 2020 10:45 Post subject: Re: Collection of Michael Shaw |
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Tobi wrote: | Hi Michael, hi Niels, indeed a beautiful baryte, but I'm also doubtful: I have seen a lot Clara barytes and I also visited the Clara Mine Museum where you can see how many different crystal varieties occur there. But if this one is from Clara, not sure ... I agree with Niels who is much more baryte-educated than me, this is really not a typical Clara specimen but it doesn't look too strange to rule it out ... :-/
Maybe a little question mark on the label would do it?
Regards
Tobi |
Niels and Tobi,
I browsed through all of the Greek barite photos on Mindat and there are a couple of Lavrion barite specimens from the Sounion Mine that are remarkably similar to the one I have. I am starting to believe that my specimen is from Greece, not Clara. Again thanks for the input.
Michael
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Mar 05, 2020 17:56 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Silver |
Locality: | Ridge Mine (absorbed by Mass Consolidated Mine), Mass City, Ontonagon County, Michigan, USA | |
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Dimensions: | 1.6 cm x 2.9 cm |
Description: |
The Ridge Mine was organized in 1850 and worked by various companies until it was absorbed, along with 4 other mines, into the Mass Consolidated Mine in 1899. The Ridge Mine was especially rich in silver. |
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14173 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Mar 08, 2020 15:34 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Azurite on Malachite |
Locality: | Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora, Mexico | |
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Dimensions: | 2.0 cm x 3.0 cm |
Description: |
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14002 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4108
Location: Germany
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Posted: Mar 09, 2020 06:15 Post subject: Re: Collection of Michael Shaw |
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Michael Shaw wrote: | Azurite on Malachite
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora, Mexico
Dimensions: 2.0 cm x 3.0 cm | Outstandingly beautiful, Michael!
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Mar 09, 2020 09:04 Post subject: Re: Collection of Michael Shaw |
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Thank you Tobi.
Mineral: | Vanadinite |
Locality: | San Carlos Mine (Apex Mine), San Carlos, Municipio Manuel Benavides, Chihuahua, Mexico | |
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Dimensions: | 2.0 cm x 2.5 cm |
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13931 Time(s) |
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Mar 16, 2020 12:39 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Malachite |
Locality: | Kerrouchen, Khénifra Province, Beni Mellal-Khenifra Region, Morocco | |
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Dimensions: | 3.0 cm x 6.0 cm |
Description: |
Fan-shaped growths of tightly-packed acicular dark green malachite crystals showing prominent color zoning and a velvety to chatoyant luster. |
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13574 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Mar 17, 2020 11:53 Post subject: Re: Collection of Michael Shaw |
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Another malachite.
Mineral: | Malachite |
Locality: | Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Dimensions: | 5.7 cm x 8.5 cm |
Description: |
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13470 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Mar 22, 2020 13:36 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Fluorite and Calcite |
Locality: | Boltsburn Mine, Rookhope District, Weardale, North Pennines Orefield, County Durham, England / United Kingdom | |
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Dimensions: | 4.6 cm x 8.7 cm x 12.3 cm. |
Description: |
Lustrous pale purple fluorite crystals to 1.3 cm associated with rosettes of flattened calcite rhombs on a gray limestone matrix. Strong purple fluorescence with both SW and LW UV light. |
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13261 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Mar 26, 2020 17:41 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Calcite on Quartz |
Locality: | Cavnic mining area, Cavnic, Maramures, Romania | |
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Dimensions: | 2.2 cm x 5.7 cm. |
Description: |
Quartz crystals draped with small colorless dolomite rhombs and associated with scalenohedral calcite crystals. |
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13070 Time(s) |
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Mineral: | Calcite on quartz |
Locality: | Cavnic mining area, Cavnic, Maramures, Romania | |
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Dimensions: | 2.2 cm x 5.7 cm. |
Description: |
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13043 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Mar 29, 2020 09:23 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Silver |
Locality: | Porco, Antonio Quijarro Province, Potosí Department, Bolivia | |
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Dimensions: | 1.5 x 2.3 cm |
Description: |
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12953 Time(s) |
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