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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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 Posted: May 29, 2019 22:57 Post subject: The Mizunaka Collection - Quartz with Chlorite |
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| Mineral: | Quartz with Chlorite Inclusions |
| Locality: | | Shingle Springs, Shingle Springs District, El Dorado County, California, USA |  |
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| Dimensions: | 9.6 x 9.3 cm |
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22243 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jun 01, 2019 16:59 Post subject: The Mizunaka Collection - Rhodochrosite |
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| Mineral: | Rhodochrosite, Fluorite, Quartz |
| Locality: | | Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province, China | |
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| Dimensions: | 5.5 x 4.4 cm |
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22054 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jun 03, 2019 01:18 Post subject: The Mizunaka Collection - Quartz |
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Quartz growing over fluorite. A second generation of very tiny quartz crystals selectively coat portions of the quartz.
| Mineral: | Quartz, Fluorite |
| Locality: | | Huanggang Mines, Hexigten Banner (Kèshíkèténg Qí), Chifeng (Ulanhad), Inner Mongolia Autonomous Region, China | |
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| Dimensions: | 9.1 x 8.3 cm |
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21904 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4248
Location: Germany
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| Posted: Jun 03, 2019 05:13 Post subject: Re: The Mizunaka Collection |
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| 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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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jun 03, 2019 22:48 Post subject: Re: The Mizunaka Collection |
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| 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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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jun 04, 2019 16:32 Post subject: The Mizunaka Collection - Quartz with chlorite |
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| Mineral: | Quartz with Chlorite inclusion |
| Locality: | | Bear Creek, New Melones Dam area, Jamestown, Calaveras County, California, USA | |
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| Dimensions: | 8.2 x 3.5 cm |
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21540 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jun 06, 2019 23:52 Post subject: The Mizunaka Collection - Quartz |
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| Mineral: | Quartz (variety amethyst) |
| Locality: | | Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Russia | |
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| Dimensions: | 12.7 x 14.1 cm |
| Description: |
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21353 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4248
Location: Germany
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| Posted: Jun 07, 2019 11:42 Post subject: Re: The Mizunaka Collection - Quartz |
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| 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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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jun 07, 2019 14:11 Post subject: Re: The Mizunaka Collection - Quartz |
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| 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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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jun 08, 2019 11:27 Post subject: The Mizunaka Collection - Quartz |
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Quartz included with kaolinite. Appears to be exhibiting some form of growth interference.
| Mineral: | Quartz |
| Locality: | | Atlanta suburbia area, Gwinnett County, Georgia, USA | |
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| Dimensions: | 12.4 x 6.6 cm |
| Description: |
| Barrett Mine, Gwinnett Co., Georgia, USA |
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21100 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jun 09, 2019 18:26 Post subject: The Mizunaka Collection - Quartz |
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| Mineral: | Quartz, Hematite |
| Locality: | | Roncari Quarry, East Granby, Hartford County, Connecticut, USA | |
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| Dimensions: | 8.1 x 6.5 cm |
| Description: |
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24782 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4248
Location: Germany
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| Posted: Jun 10, 2019 01:16 Post subject: Re: The Mizunaka Collection |
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| Beautifully coloured quartz.
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jun 10, 2019 14:41 Post subject: Re: The Mizunaka Collection |
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| Tobi wrote: | | Beautifully coloured quartz. |
Thanks Tobi!
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jun 10, 2019 17:25 Post subject: The Mizunaka Collection - Fluorite |
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Thin elogated bowl shaped cluster of fluorite.
| Mineral: | Fluorite |
| Locality: | | Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico | |
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| Dimensions: | 18.1 x 11.4 cm |
| Description: |
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| Viewed: |
24545 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jun 11, 2019 15:52 Post subject: The Mizunaka Collection - Quartz |
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| Mineral: | Quartz, Rutile |
| Locality: | | El Dorado County, California, USA | |
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| Dimensions: | 5.5 x 4.0 cm |
| Description: |
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| Viewed: |
24373 Time(s) |
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