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17 Jun-14:40:38 The mizunaka collection - quartz (Am Mizunaka)
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The Mizunaka Collection
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am mizunaka




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PostPosted: May 18, 2019 12:07    Post subject: The Mizunaka Collection - Fluorite  

Fluorite plate with tiny quartz and calcite crystals. Higher resolution version on mindat shows better detail https://www.mindat.org/photo-956321.html


ConFluorQtzCal.jpg
 Mineral: Fluorite, Quartz, Calcite
 Locality:
Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico
 Dimensions: 15.2 x 8.3 cm
 Description:
 Viewed:  2504 Time(s)

ConFluorQtzCal.jpg


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am mizunaka




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PostPosted: May 20, 2019 02:56    Post subject: The Mizunaka Collection - Quartz  

Quartz almost totally replacing elbaite. A thin veneer of elbaite only remains.


QtzTourPseudo.jpg
 Mineral: Quartz, Elbaite
 Locality:
Urubu Mine, Monte Belo, Itinga, Jequitinhonha, Minas Gerais, Brazil
 Dimensions: 5.3 x 2.4 cm
 Description:
 Viewed:  2401 Time(s)

QtzTourPseudo.jpg


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Tobi




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PostPosted: May 20, 2019 08:46    Post subject: Re: The Mizunaka Collection  

A very interesting Urubu specimen. I have seen a lot of them and once had one in my collection, but most of them were former elbaite crystals "filled" with quartz and just a small remaining layer of green tourmaline on the outside, most of them had no real termination and looked rather weathered. But a specimen of elbaite with terminated quartz crystals as upper half is really unusual. Great specimen!
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am mizunaka




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PostPosted: May 20, 2019 13:12    Post subject: Re: The Mizunaka Collection  

Tobi wrote:
A very interesting Urubu specimen. I have seen a lot of them and once had one in my collection, but most of them were former elbaite crystals "filled" with quartz and just a small remaining layer of green tourmaline on the outside, most of them had no real termination and looked rather weathered. But a specimen of elbaite with terminated quartz crystals as upper half is really unusual. Great specimen!


Thanks Tobi!
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PostPosted: May 21, 2019 02:49    Post subject: The Mizunaka Collection - Fluorite  

Fluorite with calcite.


FluoCalSE.jpg
 Mineral: Fluorite, Calcite
 Locality:
Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico
 Dimensions: 13.0 x 11.7 cm
 Description:
 Viewed:  2249 Time(s)

FluoCalSE.jpg


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PostPosted: May 25, 2019 03:31    Post subject: The Mizunaka Collection - Quartz  

Sceptered quartz on matrix.


QtzLGM1.jpg
 Mineral: Quartz (variety amethyst), Quartz (variety smoky quartz)
 Locality:
Little Gem Mine, Boulder Batholith, Jefferson County, Montana, USA
 Dimensions: 7.9 x 6.0 cm
 Description:
 Viewed:  2081 Time(s)

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PostPosted: May 26, 2019 03:39    Post subject: The Mizunaka Collection - Fluorite  

Fluorite on quartz with most of the fluorite coated with micro-crystalline quartz.


QtzFluoriteDT.jpg
 Mineral: Fluorite, Quartz
 Locality:
Deer Trail Mine, Cottonwood Creek, Baldy Peak (Mount Baldy), Tushar Mountains, Marysvale, Marysvale District, Piute County, Utah, USA
 Dimensions: 6.9 x 5.1 cm
 Description:
 Viewed:  1941 Time(s)

QtzFluoriteDT.jpg


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PostPosted: May 28, 2019 21:15    Post subject: The Mizunaka Collection - Quartz  




QtzTet.jpg
 Mineral: Quartz, Tetrahedrite
 Locality:
Huayllapon Mine (Huallapon Mine), Pasto Bueno District, Pallasca Province, Ancash Department, Peru
 Dimensions: 6.0 x 2.4 cm
 Description:
 Viewed:  1616 Time(s)

QtzTet.jpg


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PostPosted: May 29, 2019 02:59    Post subject: Re: The Mizunaka Collection  

Wonderful Deer Trail specimen, very beautiful!
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PostPosted: May 29, 2019 13:43    Post subject: Re: The Mizunaka Collection  

Tobi wrote:
Wonderful Deer Trail specimen, very beautiful!


Thanks Tobi!
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PostPosted: May 29, 2019 22:57    Post subject: The Mizunaka Collection - Quartz with Chlorite  




QtzShingleSpr4.jpg
 Mineral: Quartz with Chlorite Inclusions
 Locality:
Shingle Springs, Shingle Springs District, El Dorado County, California, USA
 Dimensions: 9.6 x 9.3 cm
 Description:
 Viewed:  1454 Time(s)

QtzShingleSpr4.jpg


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PostPosted: Jun 01, 2019 16:59    Post subject: The Mizunaka Collection - Rhodochrosite  




RhodoFluoriteY.jpg
 Mineral: Rhodochrosite, Fluorite, Quartz
 Locality:
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province, China
 Dimensions: 5.5 x 4.4 cm
 Description:
 Viewed:  1255 Time(s)

RhodoFluoriteY.jpg


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PostPosted: Jun 03, 2019 01:18    Post subject: The Mizunaka Collection - Quartz  

Quartz growing over fluorite. A second generation of very tiny quartz crystals selectively coat portions of the quartz.


QtzFluorite1.jpg
 Mineral: Quartz, Fluorite
 Locality:
Huanggang Mines, Hexigten Banner (Kèshíkèténg Qí), Ulanhad (Chifeng), Inner Mongolia Autonomous Region, China
 Dimensions: 9.1 x 8.3 cm
 Description:
 Viewed:  1094 Time(s)

QtzFluorite1.jpg


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PostPosted: Jun 03, 2019 05:13    Post subject: Re: The Mizunaka Collection  

That tetrahedrite from Huayllapon Mine looks interesting, I like the pattern and the iridescent colours. Are there many smaller tetrahedrites growing on the crystal?
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PostPosted: Jun 03, 2019 22:48    Post subject: Re: The Mizunaka Collection  

Tobi wrote:
That tetrahedrite from Huayllapon Mine looks interesting, I like the pattern and the iridescent colours. Are there many smaller tetrahedrites growing on the crystal?


There appears to be at least one very small tetrahedrite crystal on the face of the main crystal. There are other small crystals that look like they could be galena.
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PostPosted: Jun 04, 2019 16:32    Post subject: The Mizunaka Collection - Quartz with chlorite  




QtzChlorNM.jpg
 Mineral: Quartz with Chlorite inclusion
 Locality:
Bear Creek, New Melones Dam area, Jamestown, Calaveras County, California, USA
 Dimensions: 8.2 x 3.5 cm
 Description:
 Viewed:  914 Time(s)

QtzChlorNM.jpg


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PostPosted: Jun 06, 2019 23:52    Post subject: The Mizunaka Collection - Quartz  




AmethystDN.jpg
 Mineral: Quartz (variety amethyst)
 Locality:
Dalnegorsk, Kavalerovo Mining District, Primorskiy Kray, Far-Eastern Region, Russia
 Dimensions: 12.7 x 14.1 cm
 Description:
 Viewed:  710 Time(s)

AmethystDN.jpg


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PostPosted: Jun 07, 2019 11:42    Post subject: Re: The Mizunaka Collection - Quartz  

am mizunaka wrote:
Quartz (variety amethyst)
Dalnegorsk, Kavalerovo Mining District, Primorskiy Kray, Far-Eastern Region, Russia
Dimensions: 12.7 x 14.1 cm
The overall form, the quality and condition, the colour, the size - I think this is the best amethyst specimen I have ever seem from Dalnegorsk!
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PostPosted: Jun 07, 2019 14:11    Post subject: Re: The Mizunaka Collection - Quartz  

Tobi wrote:
am mizunaka wrote:
Quartz (variety amethyst)
Dalnegorsk, Kavalerovo Mining District, Primorskiy Kray, Far-Eastern Region, Russia
Dimensions: 12.7 x 14.1 cm
The overall form, the quality and condition, the colour, the size - I think this is the best amethyst specimen I have ever seem from Dalnegorsk!


Thanks Tobi! This came out of an old collection and there was one other smaller piece that was nice but did not have the color that this one has.
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PostPosted: Jun 08, 2019 11:27    Post subject: The Mizunaka Collection - Quartz  

Quartz included with kaolinite. Appears to be exhibiting some form of growth interference.


QtzGIGA.jpg
 Mineral: Quartz
 Locality:
Atlanta suburbia area, Gwinnett County, Georgia, USA
 Dimensions: 12.4 x 6.6 cm
 Description:
Barrett Mine, Gwinnett Co., Georgia, USA
 Viewed:  546 Time(s)

QtzGIGA.jpg


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