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Tobi
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Joined: 07 Apr 2009
Posts: 4248
Location: Germany
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 Posted: Jan 27, 2020 03:48 Post subject: Re: Collection of Michael Shaw |
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| Michael Shaw wrote: | | Tobi wrote: | | Wonderful - all of them! :-) |
Thanks Tobi. In a few weeks we head out to Tucson in hopes of finding a few more treasures to add to our collections. |
Can't wait to see them - good luck in Tucson!
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2244
Location: Oklahoma
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| Posted: Jan 27, 2020 09:20 Post subject: Re: Collection of Michael Shaw |
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| Mineral: | Calcite |
| Locality: | | Boldut Mine, Cavnic mining area, Cavnic, Maramures, Romania |  |
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| Dimensions: | 5.1 cm x 8.5 cm |
| Description: |
| Colorless curved calcite rhombs forming a spherical shaped group 4.8 cm across with crystals of light brown siderite. |
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16839 Time(s) |
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2244
Location: Oklahoma
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| Posted: Jan 28, 2020 16:51 Post subject: Re: Collection of Michael Shaw |
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| Mineral: | Quartz |
| Locality: | | Herja Mine, Chiuzbaia, Baia Sprie, Maramures, Romania | |
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| Dimensions: | 5.5 cm x 7.0 cm |
| Description: |
| A complete floater of lustrous, doubly-terminated quartz crystals to 1.2 cm covering both sides of a quartz matrix. The matrix and many of the quartz crystals are included with jamesonite giving them a grey color. |
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16605 Time(s) |
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2244
Location: Oklahoma
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| Posted: Feb 03, 2020 18:32 Post subject: Re: Collection of Michael Shaw |
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| Mineral: | Fluorite |
| Locality: | | Rogerley Mine, Diana Maria Mine (Sutcliffe Vein) , Frosterley, Weardale, North Pennines Orefield, County Durham, England / United Kingdom | |
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| Dimensions: | 6.7 x 4.5 cm. |
| Description: |
| Gemmy emerald green fluorite crystals to 1.0 cm several of which are penetration twinned and display tetrahexahedral faces. |
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16438 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4248
Location: Germany
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| Posted: Feb 04, 2020 07:31 Post subject: Re: Collection of Michael Shaw |
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| Really wonderful Rogerley fluorite, Michael!
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2244
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: 2244
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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18122 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4248
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
Site Admin
Joined: 30 Apr 2008
Posts: 2244
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
Site Admin
Joined: 30 Apr 2008
Posts: 2244
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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17937 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2244
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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17790 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
Site Admin
Joined: 30 Apr 2008
Posts: 2244
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
Site Admin
Joined: 07 Apr 2009
Posts: 4248
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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