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26 Feb-06:02:08 Re: collection of carles millan (Tobi)
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25 Feb-16:12:26 Re: don lum collection (Don Lum)
25 Feb-15:06:36 Re: collection of michael shaw (Michael Shaw)
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25 Feb-01:36:30 The mizunaka collection - agate (Am Mizunaka)
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Collection of Michael Shaw
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Michael Shaw
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PostPosted: Dec 30, 2023 10:54    Post subject: Re: Collection of Michael Shaw  




1652 Bixbyite - Topaz Mt., Thomas Range, Juab Co., Utah.jpg
 Mineral: Bixbyite
 Locality:
Topaz Mountain, Thomas Range, Juab County, Utah, USA
 Dimensions: 8.7 x 6.6 x 4.5 cm
 Description:
Several lustrous black bixbyite crystals to 0.6 cm on a contrasting light-colored rhyolite matrix.
 Viewed:  3384 Time(s)

1652 Bixbyite - Topaz Mt., Thomas Range, Juab Co., Utah.jpg



1652 Bixbyite 2 - Topaz Mt., Thomas Range, Juab Co., Utah.jpg
 Mineral: Bixbyite
 Locality:
Topaz Mountain, Thomas Range, Juab County, Utah, USA
 Dimensions: 8.7 x 6.6 x 4.5 cm, FOV = 2.0 cm
 Description:
Detail of single bixbyite crystal showing modified edges and corner.
 Viewed:  3357 Time(s)

1652 Bixbyite 2 - Topaz Mt., Thomas Range, Juab Co., Utah.jpg


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Michael Shaw
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PostPosted: Jan 02, 2024 09:27    Post subject: Re: Collection of Michael Shaw  




1878 Galena - Elmwood Mine, Carthage, Smith Co., Tennesse.jpg
 Mineral: Galena
 Locality:
Elmwood Mine, Carthage, Central Tennessee Ba-F-Pb-Zn District, Smith County, Tennessee, USA
 Dimensions: 6.5 x 5.5 x 5.5 cm
 Description:
Lustrous cubeoctahedral galena crystals forming an aesthetic cluster with small gemmy calcites.
 Viewed:  3308 Time(s)

1878 Galena - Elmwood Mine, Carthage, Smith Co., Tennesse.jpg


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PostPosted: Jan 05, 2024 10:08    Post subject: Re: Collection of Michael Shaw  




2993 Calcite on Arsenopyrite - Stari Trg Mine, Trepca Complex, Mitrovica, Kosovo.jpg
 Mineral: Calcite on Arsenopyrite
 Locality:
Stan Trg (Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District, Kosovo
 Dimensions: 4.6 x 3.1 x 2.6 cm
 Description:
Spherical white calcites consisting of numerous rhombic crystals resting on bright metallic silver arsenopyrite crystals.
 Viewed:  3220 Time(s)

2993 Calcite on Arsenopyrite - Stari Trg Mine, Trepca Complex, Mitrovica, Kosovo.jpg


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Michael Shaw
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PostPosted: Jan 06, 2024 09:59    Post subject: Re: Collection of Michael Shaw  




2881 Calcite - Xianghualing Mine, Linwu Co., Hunan Prov., China.jpg
 Mineral: Calcite
 Locality:
Xianghualing Mine, Xianghualing Sn-polymetallic ore field, Linwu, Chenzhou Prefecture, Hunan Province, China
 Dimensions: 9.5 x 7.5 x 6.5 cm
 Description:
Colorless lenticular calcite crystals to 5.5 cm forming an intergrown group.
 Viewed:  3161 Time(s)

2881 Calcite - Xianghualing Mine, Linwu Co., Hunan Prov., China.jpg



2881 Calcite (2) - Xianghualing Mine, Linwu Co., Hunan Prov., China.jpg
 Mineral: Calcite
 Locality:
Xianghualing Mine, Xianghualing Sn-polymetallic ore field, Linwu, Chenzhou Prefecture, Hunan Province, China
 Dimensions: 9.5 x 7.5 x 6.5 cm
 Description:
 Viewed:  3172 Time(s)

2881 Calcite (2) - Xianghualing Mine, Linwu Co., Hunan Prov., China.jpg


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Sante Celiberti




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PostPosted: Jan 06, 2024 16:58    Post subject: Re: Collection of Michael Shaw  

Hi, Michael. How are you?

Did you try the fluorescence on the spherical Calcite from Stan Trg Mine?
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PostPosted: Jan 07, 2024 11:08    Post subject: Re: Collection of Michael Shaw  

Sante Celiberti wrote:
Hi, Michael. How are you?

Did you try the fluorescence on the spherical Calcite from Stan Trg Mine?


Hello Sante,
I am doing well, hope you are too. We are back to a regular routine after the hectic holidays.

Yes, I checked the Stan Trg Mine calcite for fluorescence with both long and short wave light, and there was no reaction to either.

Cheers,
Michael
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Sante Celiberti




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PostPosted: Jan 07, 2024 14:24    Post subject: Re: Collection of Michael Shaw  

Hi, Michael.

I was hoping your Calcite would react to long waves. I bought, a month ago, a similar one (but on Galena) from the same locality and, once at home, I discovered a very vivid snow white fluorescence, the best I've ever seen for this color.

Greetings from Tuscany.
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Michael Shaw
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PostPosted: Jan 07, 2024 19:51    Post subject: Re: Collection of Michael Shaw  

Sante Celiberti wrote:
Hi, Michael.

I was hoping your Calcite would react to long waves. I bought, a month ago, a similar one (but on Galena) from the same locality and, once at home, I discovered a very vivid snow white fluorescence, the best I've ever seen for this color.


That's great. I wonder what the "activator" is to produce this white fluorescence. Perhaps some lead cations from the galena?
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Sante Celiberti




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PostPosted: Jan 08, 2024 16:06    Post subject: Re: Collection of Michael Shaw  

HI, Michael.

After you said that your specimen doesn't fluoresce I also thought that the activator could derive from Galena.
Many of my Calcites, with different paragenesis, fluoresce white, but this normally tends towards yellow, cream, green and even blue.
Discovering a white like this was a pleasing surprise for me that I would have liked to share with you.
When my eyesight improves, as I hope, it will be one of the first pieces I photograph and post.

Warm greetings.
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PostPosted: Jan 09, 2024 15:18    Post subject: Re: Collection of Michael Shaw  




2964 (2) Jamesonite on Quartz - Yaogangxian Mine, Hunan Prov., China.jpg
 Mineral: Jamesonite on Quartz
 Locality:
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province, China
 Dimensions: 8.0 x 4.1 x 1.8 cm
 Description:
Flattened quartz crystals in sub-parallel growth covered on one side with
acicular jamesonite, prismatic black bournonite, chalcopyrite, and white dolomite crystals.
 Viewed:  2851 Time(s)

2964 (2) Jamesonite on Quartz - Yaogangxian Mine, Hunan Prov., China.jpg



2964 Jamesonite on Quartz - Yaogangxian Mine, Hunan Prov., China.jpg
 Mineral: Jamesonite on Quartz
 Locality:
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province, China
 Dimensions: 8.0 x 4.1 x 1.8 cm
 Description:
Reverse side
 Viewed:  2821 Time(s)

2964 Jamesonite on Quartz - Yaogangxian Mine, Hunan Prov., China.jpg


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PostPosted: Jan 12, 2024 10:23    Post subject: Re: Collection of Michael Shaw  




2975 Barite - San Jorge Mine, Portman, La Union, Murcia, Spain.jpg
 Mineral: Baryte
 Locality:
San Jorge mining group, Sierra Minera de Cartagena-La Unión, Portmán, La Unión, Comarca Campo de Cartagena, Region of Murcia (Murcia), Spain
 Dimensions: 9.4 x 6.9 x 2.7 cm
 Description:
A flat plate covered with fine blue-gray chisel-shaped barite crystals to 1.5 cm. The crystals are lustrous and show subtle color-zoning.
 Viewed:  2554 Time(s)

2975 Barite - San Jorge Mine, Portman, La Union, Murcia, Spain.jpg



2975 Barite2 - San Jorge Mine, Portman, La Union, Murcia, Spain.jpg
 Mineral: Baryte
 Locality:
San Jorge mining group, Sierra Minera de Cartagena-La Unión, Portmán, La Unión, Comarca Campo de Cartagena, Region of Murcia (Murcia), Spain
 Dimensions: 9.4 x 6.9 x 2.7 cm
 Description:
reverse side
 Viewed:  2546 Time(s)

2975 Barite2 - San Jorge Mine, Portman, La Union, Murcia, Spain.jpg


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PostPosted: Jan 15, 2024 09:26    Post subject: Re: Collection of Michael Shaw  




2989 Vanadinite - Grey Horse Mine, Pinal County, Arizona.jpg
 Mineral: Vanadinite
 Locality:
Grey Horse Mine, Riverside, Riverside District, Dripping Spring Mountains, Pinal County, Arizona, USA
 Dimensions: 4.6 x 4.0 x 2.0 cm
 Description:
Reddish orange vanadinite crystals scattered on a thin crust of gray to
white calcite on brown matrix.
 Viewed:  2310 Time(s)

2989 Vanadinite - Grey Horse Mine, Pinal County, Arizona.jpg


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PostPosted: Jan 17, 2024 16:29    Post subject: Re: Collection of Michael Shaw  




2865 Hematite - Mefis, Taouz, Er Rachidia Prov., Draa-Tafilalet Reg., Morocco.jpg
 Mineral: Hematite
 Locality:
Four Man Mine, Taouz, Er Rachidia Province, Drâa-Tafilalet Region, Morocco
 Dimensions: 5.6 x 5.4 x 4.3 cm
 Description:
Botryoidal hematite (variety kidney ore).
 Viewed:  2084 Time(s)

2865 Hematite - Mefis, Taouz, Er Rachidia Prov., Draa-Tafilalet Reg., Morocco.jpg


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PostPosted: Jan 21, 2024 10:42    Post subject: Re: Collection of Michael Shaw  




2997 Calcite - West orebody, Sweetwater Mine, Ellington, Reynolds Co., Missouri.jpg
 Mineral: Calcite
 Locality:
Sweetwater Mine, Ellington, Viburnum Trend District, Reynolds County, Missouri, USA
 Dimensions: 8.0 x 5.0 x 3.0 cm
 Description:
Lustrous honey-colored calcite crystals to 7.7 cm in length on a breccia matrix with minor pyrite and dolomite. Collected from the west orebody in 2023.
 Viewed:  1874 Time(s)

2997 Calcite - West orebody, Sweetwater Mine, Ellington, Reynolds Co., Missouri.jpg



2997 Calcite - Sweetwater Mine, Ellington, Reynolds Co., Missouri.jpg
 Mineral: Calcite
 Locality:
Sweetwater Mine, Ellington, Viburnum Trend District, Reynolds County, Missouri, USA
 Dimensions: 8.0 x 5.0 x 3.0 cm
 Description:
 Viewed:  1875 Time(s)

2997 Calcite - Sweetwater Mine, Ellington, Reynolds Co., Missouri.jpg


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PostPosted: Jan 23, 2024 09:16    Post subject: Re: Collection of Michael Shaw  




Quartz and Calcite - St. Francisville, Missouri.jpg
 Mineral: Quartz and Calcite
 Locality:
St. Francisville, Clark County, Missouri, USA
 Dimensions: 15.2 x 10.0 cm
 Description:
Two attached geodes, one opened, lined with quartz and calcite crystals, collected from the Keokuk Formation in June 1996.
 Viewed:  1738 Time(s)

Quartz and Calcite  - St. Francisville, Missouri.jpg


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PostPosted: Jan 25, 2024 10:39    Post subject: Re: Collection of Michael Shaw  

The Jinny Hill Mine near Cheshire, Connecticut has a rich historical background. It was first discovered in 1813 by Yale Professor, Benjamin Silliman. Also known as the Cheshire Barite Mine, it was the first barite mine in North America, operating between 1838 and 1878. During that time, the mine produced about 160,000 tons of baryte ore, which was used in paint manufacturing.

Fritts, Crawford E. (1962): The Barite Mines of Cheshire. Cheshire Historical Society. Reprinted 1990 by State Geologic and Natural History Survey of Connecticut, Hartford: 36 p.



3004 Barite - Jinny Hill Mine, Cheshire, New Haven Co., Connecticut.jpg
 Mineral: Barite
 Locality:
Jinny Hill Mine, Cheshire, New Haven County, Connecticut, USA
 Dimensions: 8.5 x 8.0 x 2.0 cm
 Description:
Several tabular colorless barite crystals in parallel growth. The crystals are mostly opaque except for the terminations which are translucent to transparent and exhibit good luster.
 Viewed:  1619 Time(s)

3004 Barite - Jinny Hill Mine, Cheshire, New Haven Co., Connecticut.jpg


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PostPosted: Jan 31, 2024 18:28    Post subject: Re: Collection of Michael Shaw  




3005 Pyrite nodule - Spring Creek, Alden, Erie County, New York.jpg
 Mineral: Pyrite
 Locality:
Spring Creek, Alden, Erie County, New York, USA
 Dimensions: 1.6 cm
 Description:
These pyrite nodules have been in my collection for 60+ years. They are said to be susceptible to "pyrite disease" but these show no noticeable decomposition. Originally identified as marcasite, x-ray diffraction studies at the State University of New York have shown they are pyrite. No marcasite occurs at this old locality.
 Viewed:  1328 Time(s)

3005 Pyrite nodule - Spring Creek, Alden, Erie County, New York.jpg



3005 Pyrite nodule (Chonetes) - Spring Creek, Alden, Erie County, New York.jpg
 Mineral: Pyrite
 Locality:
Spring Creek, Alden, Erie County, New York, USA
 Dimensions: 2.6 x 2.0 cm
 Description:
The nodules often contain fossils. Chonetes sp., a brachiopod, is encased in this one.
 Viewed:  1328 Time(s)

3005 Pyrite nodule (Chonetes) - Spring Creek, Alden, Erie County, New York.jpg


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PostPosted: Feb 09, 2024 22:17    Post subject: Re: Collection of Michael Shaw  




2915 Barite - Minerva Mine #1, Cave-in-Rock District, Hardin Co., Illinois.jpg
 Mineral: Barite
 Locality:
Minerva I Mine, Ozark-Mahoning group, Cave-in-Rock Sub-District, Hardin County, Illinois, USA
 Dimensions: 7.3 x 5.0 x 4.2 cm
 Description:
Creamy white to pale tan elongated barite crystals covering the top surface of a barite and yellow fluorite matrix.
 Viewed:  870 Time(s)

2915 Barite - Minerva Mine #1, Cave-in-Rock District, Hardin Co., Illinois.jpg


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PostPosted: Feb 12, 2024 14:49    Post subject: Re: Collection of Michael Shaw  




2968 Quartz - Yaogangxian Mine, Hunan Province, China.jpg
 Mineral: Quartz
 Locality:
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province, China
 Dimensions: 8.1 x 5.0 x 2.8 cm
 Description:
A nearly complete floater of mostly colorless stalactitic quartz in the shape of a dog. Some of the crystals on the back of the specimen have inclusions of a pale green mineral and there are tiny chalcopyrite crystals present as well.
 Viewed:  696 Time(s)

2968 Quartz - Yaogangxian Mine, Hunan Province, China.jpg


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PostPosted: Feb 15, 2024 09:38    Post subject: Re: Collection of Michael Shaw  




3037 Gypsum on Dolomite - Cavnic, Maramures, Romania.jpg
 Mineral: Gypsum on Dolomite
 Locality:
Cavnic Mine, Cavnic mining area, Cavnic, Maramures, Romania
 Dimensions: 8.9 x 6.5 x 5.8 cm
 Description:
Sub-parallel group of colorless transparent gypsum crystals standing upright on a pale tan dolomite matrix.
 Viewed:  517 Time(s)

3037 Gypsum on Dolomite - Cavnic, Maramures, Romania.jpg


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