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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2256
Location: Oklahoma
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 Posted: Mar 01, 2014 14:49 Post subject: Re: Collection of Michael Shaw |
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Here are the other three pieces from China that we were able to add to our collection.
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Calcite
Huanggang Mine #5, Chifeng Pref., Inner Mongolia AR, China
9.5 x 16.0 cm
A group of club-shaped manganese-rich calcite crystals. There are small hedenbergite-included quartz crystals on the backside. |
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35221 Time(s) |
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Chalcocite
Tongshan Mine, Daye Mine, Huangshi Pref., Hubei Prov., China
1.0 x 4.7 cm
Stalactitic chalcocite coated with a thin film of iridescent chalcopyrite. |
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35261 Time(s) |
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Helvite-Genthelvite series
Huanggang Mine #1, Chifeng Pref., Inner Mongolia AR, China
3.4 x 4.5 cm
Root beer-colored crystals of helvite-genthelvite series attached to a sceptered quartz crystal dotted with small spheres of dark green clinochlore. |
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35238 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2919
Location: Arkansas
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| Posted: Mar 01, 2014 16:25 Post subject: Re: Collection of Michael Shaw |
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Michael,
I like your chalcocite. Never seen a better one.
Don
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2256
Location: Oklahoma
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| Posted: Mar 05, 2014 13:10 Post subject: Re: Collection of Michael Shaw |
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Thanks Don, these chalcocites almost look artificial, but they are really that colorful.
Today I'd like to show a few minerals from the Trepca Complex in Kosovo. These are all older specimens in the collection and date to the late 60s and early 70s. In future posts I'll show some pieces that are the result of more recent mining.
Michael
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Sphalerite
Stari Trg Mine, Trepca Complex, Kosovska-Mitrovica, Kosovo
6.1 x 8.0 cm
Black sphalerite crystals to 2.5 cm associated with rhombic calcite and small quartz crystals on a massive and crystallized pyrite matrix. |
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35169 Time(s) |
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Arsenopyrite
Stari Trg Mine, Trepca Complex, Kosovska-Mitrovica, Kosovo
5.2 x 9.7 cm
Sharp metallic silver arsenopyrite crystals set among opaque milky quartz crystals. |
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35044 Time(s) |
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Chalcopyrite
Stari Trg Mine, Trepca Complex, Kosovska-Mitrovica, Kosovo
5.5 x 7.5 cm
Brassy-yellow chalcopyrite crystals with an iridescent tarnish on a sulfide rich matrix. |
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35034 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1243
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| Posted: Mar 05, 2014 14:34 Post subject: Re: Collection of Michael Shaw |
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Hello,
As usual I am struck with admiration for the selection of specimens and photos.
Roger.
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2256
Location: Oklahoma
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| Posted: Mar 05, 2014 16:28 Post subject: Re: Collection of Michael Shaw |
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| Roger Warin wrote: | Hello,
As usual I am struck with admiration for the selection of specimens and photos.
Roger. |
Thank you Roger. I very much appreciate your comment.
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Martin Rich
Joined: 15 Aug 2013
Posts: 127
Location: Lower Austria
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| Posted: Mar 05, 2014 20:41 Post subject: Re: Collection of Michael Shaw |
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Michael, I enjoy your photographs and specimen everytime!
Martin
_________________
We are living on the matrix. |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2256
Location: Oklahoma
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| Posted: Mar 05, 2014 20:59 Post subject: Re: Collection of Michael Shaw |
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| Martin Rich wrote: | Michael, I enjoy your photographs and specimen everytime!
Martin |
Thank you very much Martin. After I finish with Trepca, I am planning on showing a few pieces from your country.
Michael
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2256
Location: Oklahoma
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| Posted: Mar 11, 2014 15:09 Post subject: Re: Collection of Michael Shaw |
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Continuing with minerals from Trepca.
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Sphalerite and calcite
Trepca Complex, Kosovska-Mitrovica, Kosovo
7.2 x 8.5 cm
Lustrous complex crystal of sphalerite capped by colorless calcite crystals. |
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34824 Time(s) |
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Quartz
Stari Trg Mine, Trepca Complex, Kosovska-Mitrovica, Kosovo
7.0 x 9.0 cm
Divergent group of colorless quartz crystals to 8 cm with small colorless calcite crystals on the back side. |
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34838 Time(s) |
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Pyrite ps. after pyrrhotite
Trepca Complex, Kosovska-Mitrovica, Kosovo
7.6 x 8.7 cm
Thin bladed pyrrhotite crystals replaced by bright micro crystals of pyrite associated with pale tan calcite spheres and minor galena. |
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34799 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2256
Location: Oklahoma
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| Posted: Mar 14, 2014 10:52 Post subject: Re: Collection of Michael Shaw |
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More from Trepca, Kosovo.
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Calcite
Trepca Complex, Kosovska Mitrovica, Kosovo
6.5 x 7.4 cm
A flat plate of lustrous sphalerite crystals and associated siderite covered on both sides with numerous semi-transparent rhombic calcite crystals. |
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34726 Time(s) |
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Quartz
Trepca Complex, Kosovska Mitrovica, Kosovo
3.4 x 6.6 cm
A jackstraw group quartz crystals covered with rhombic micro calcites and dark green to black spherical chlorite. |
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34696 Time(s) |
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Calcite
Trepca Complex, Kosovska Mitrovica, Kosovo
3.0 x 7.4 cm
A group of pale yellow quartz crystals coated on one side with opaque white calcite rhombs. |
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34767 Time(s) |
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Dolomite
Trepca Complex, Kosovska Mitrovica, Kosovo
7.0 x 7.0 cm
A combination of prismatic quartz, spherical brown dolomite (these may be siderite), and dark green chlorite. |
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34832 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2256
Location: Oklahoma
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| Posted: Mar 17, 2014 10:13 Post subject: Re: Collection of Michael Shaw |
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Today's post will finish up our collection of minerals from Trepca.
| Description: |
Boulangerite
Trepca complex, Kosovska Mitrovica, Kosovo
10.1 x 11.3 cm
Acicular metallic gray boulangerite crystals lining a seam in crystallized black sphalerite, associated with spherical brown siderite and colorless calcite. Mined in 2011. |
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34483 Time(s) |
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Pyrrhotite
Trepca complex, Kosovska Mitrovica, Kosovo
8.0 x 8.6 cm.
Thin hexagonal plates of brassy pyrrhotite with black sphalerite, colorless quartz and cubic pyrite crystals. |
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34459 Time(s) |
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Quartz
Trepca complex, Kosovska Mitrovica, Kosovo
6.1 x 7.3 cm
Transparent quartz crystals with minor pyrite and chlorite. Mined in 2012. |
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34425 Time(s) |
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Calcite
Trepca complex, Kosovska Mitrovica, Kosovo
Several intergrown rhombs of light tan calcite partially covered with a second generation of colorless calcite and minor quartz. Mined in 2012. These were originally thought to be dolomite, but subsequent analysis at the Carnegie Museum indicated that they were calcite. |
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34547 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2919
Location: Arkansas
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4248
Location: Germany
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2256
Location: Oklahoma
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| Posted: Mar 17, 2014 15:21 Post subject: Re: Collection of Michael Shaw |
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| I appreciate your kind comments Don and Tobi.
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Martin Rich
Joined: 15 Aug 2013
Posts: 127
Location: Lower Austria
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| Posted: Mar 17, 2014 20:22 Post subject: Re: Collection of Michael Shaw |
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Hm..., seems, that such rhombohedrons are needed a closer research for exact ID. Dolomite or Calcite, that's the question.
Martin
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We are living on the matrix. |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2256
Location: Oklahoma
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| Posted: Mar 20, 2014 10:06 Post subject: Re: Collection of Michael Shaw |
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In today's post, I would like to show a few specimens from some well-known locations in Austria. I hope you enjoy them Martin.
| Description: |
Almandine
Gaisberg Glacier, Otztal, Tyrol, Austria
6.5 x 7.0 cm
A mica schist matrix hosting a few reddish-brown crystals of almandine. |
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34020 Time(s) |
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Orthoclase var. adularia
Tyrol, Austria
7.1 x 9.3 cm
Colorless adularia crystals associated with fibrous white to greenish byssolite. |
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34053 Time(s) |
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Aragonite var. flos ferri
Styrian Erzberg, Eisenerz, Styria, Austria
7.0 x 12.5 cm
Branching white aragonite in a coral-like growth known as flos ferri from a classic Austrian locale. |
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34121 Time(s) |
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Actinolite var. Byssolite
Knappenwand, Untersulzbach Valley, Hohe Tauern, Salzburg, Austria
4.0 x 6.2 cm
Delicate needles of dark green byssolite scattered amongst white albite crystals. |
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34075 Time(s) |
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