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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2230
Location: Oklahoma
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 Posted: Apr 29, 2025 08:23 Post subject: Re: Collection of Michael Shaw |
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Dioptase from Gautala. Dioptase is notoriously difficult to photograph and achieve true color rendition due to inherent sensitivity of the camera sensor. Both of these pieces were photographed under identical illumination with minimal post capture editing. The natural color of the two specimens is actually quite different.
| Mineral: | Dioptase |
| Locality: | | Gautala, Mindouli District, Pool Department, Republic of the Congo |  |
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| Dimensions: | 7.5 x 4.5 x 1.4 cm |
| Description: |
| A thin plate of lustrous emerald-green dioptase crystals. |
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| Viewed: |
1084 Time(s) |
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| Mineral: | Dioptase |
| Locality: | | Gautala, Mindouli District, Pool Department, Republic of the Congo | |
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| Dimensions: | 8.0 x 6.0 x 2.5 cm |
| Description: |
| Lustrous emerald-green dioptase crystals forming a concave plate. |
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| Viewed: |
1083 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2230
Location: Oklahoma
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| Posted: May 01, 2025 09:04 Post subject: Re: Collection of Michael Shaw |
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| Mineral: | Azurite |
| Locality: | |
| Dimensions: | 4.4 x 2.3 x 1.3 cm |
| Description: |
| Lustrous bladed deep blue azurite crystals to 0.6 cm covering the top of a pale brown matrix from the Yanga Koubenza deposit. |
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| Viewed: |
982 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2230
Location: Oklahoma
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| Posted: May 05, 2025 08:26 Post subject: Re: Collection of Michael Shaw |
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| Mineral: | Cassiterite |
| Locality: | |
| Dimensions: | 5.8 x 4.1 x 2.8 cm |
| Description: |
| Lustrous partially gemmy dark brown cassiterite crystals on a matrix of silvery muscovite, with several quartz crystals on the reverse side. |
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| Viewed: |
800 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2230
Location: Oklahoma
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| Posted: May 07, 2025 10:22 Post subject: Re: Collection of Michael Shaw - Quartz ps. after Barite |
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| Mineral: | Quartz |
| Locality: | |
| Dimensions: | 7.0 x 5.0 x 4.6 cm |
| Description: |
| Sugary-textured quartz forming a hollow epimorph of barite crystals. |
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| Viewed: |
685 Time(s) |
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| Mineral: | Quartz |
| Locality: | |
| Dimensions: | 7.0 x 5.0 x 4.6 cm |
| Description: |
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| Viewed: |
685 Time(s) |
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James Catmur
Site Admin
Joined: 14 Sep 2006
Posts: 1463
Location: Cambridge
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| Posted: May 07, 2025 14:13 Post subject: Re: Collection of Michael Shaw |
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| I love epimorphs
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2230
Location: Oklahoma
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| Posted: May 13, 2025 08:04 Post subject: Re: Collection of Michael Shaw - Wulfenite from the Type Locality |
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| Mineral: | Wulfenite |
| Locality: | |
| Dimensions: | 7.5 x 4.0 x 2.0 cm |
| Description: |
| An aggregate of thin platy crystals of yellow-orange wulfenite with beveled edges covering both sides of the specimen. Recovered from the 12th Level in 1975. |
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| Viewed: |
410 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2230
Location: Oklahoma
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| Posted: May 18, 2025 18:15 Post subject: Re: Collection of Michael Shaw |
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Another Austrian piece
| Mineral: | Siderite |
| Locality: | |
| Dimensions: | 7.1 x 5.8 x 2.7 cm |
| Description: |
| Medium brown rhombic siderite crystals to 2.0 cm with accenting white dolomite crystals. |
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| Viewed: |
65 Time(s) |
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