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13 Mar-00:57:48 The mizunaka collection - quartz (Am Mizunaka)
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The Mizunaka Collection
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Tobi
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PostPosted: Sep 20, 2022 03:22    Post subject: Re: The Mizunaka Collection - Quartz  

am mizunaka wrote:
Tobi wrote:
This locality was unknown to me, but as a quartz fan I love that specimen, it has a kind of alpine character. Nice one!
Thanks Tobi! The locality is well known in the US. I think there have been some exceptional finds of the quartz in the past.
Seems as if I have to expand my knowledge about U.S. quartz localities :-)
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PostPosted: Sep 22, 2022 00:36    Post subject: The Mizunaka Collection - Vivianite  




vivker.jpg
 Mineral: Vivianite
 Locality:
Kerch peninsula, Crimea peninsula, Crimea Oblast, Ukraine
 Dimensions: 6.4 x 4.8 cm
 Description:
 Viewed:  6666 Time(s)

vivker.jpg


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PostPosted: Sep 22, 2022 18:08    Post subject: The Mizunaka Collection - Fluorite  




FluoriteSFG.jpg
 Mineral: Fluorite
 Locality:
Xianghuapu Mine, Xianghualing Sn-polymetallic ore field, Linwu, Chenzhou Prefecture, Hunan Province, China
 Dimensions: 5.4 x 3.2 cm
 Description:
 Viewed:  6594 Time(s)

FluoriteSFG.jpg


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am mizunaka




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PostPosted: Sep 23, 2022 17:03    Post subject: The Mizunaka Collection - Calcite  




CalVib29.jpg
 Mineral: Calcite, Marcasite
 Locality:
Viburnum No. 29 Mine, Courtois, Viburnum Trend District, Washington County, Missouri, USA
 Dimensions: 9.2 x 3.8 cm
 Description:
Etched calcite giving a scepter like appearance. A patch of marcasite is on the "stem".
 Viewed:  6501 Time(s)

CalVib29.jpg


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PostPosted: Sep 24, 2022 17:02    Post subject: The Mizunaka Collection - Smoky Quartz  




SmkQtzLep.jpg
 Mineral: Quartz (variety smoky quartz), 'lepidolite'
 Locality:
Himalaya Mine, Gem Hill, Mesa Grande District, San Diego County, California, USA
 Dimensions: 8.5 x 9.7 cm
 Description:
Glassy smoky quartz with a few lepidolite crystals on a bit of matrix.
 Viewed:  6381 Time(s)

SmkQtzLep.jpg


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PostPosted: Sep 25, 2022 18:02    Post subject: The Mizunaka Collection - Datolite  




DataPyr.jpg
 Mineral: Datolite, Pyrite
 Locality:
Charcas, Municipio Charcas, San Luis Potosí, Mexico
 Dimensions: 8.8 x 5.2 cm
 Description:
 Viewed:  6273 Time(s)

DataPyr.jpg


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PostPosted: Sep 27, 2022 13:37    Post subject: The Mizunaka Collection - Amethyst  




AmethystScepterKor.jpg
 Mineral: Quartz (variety amethyst)
 Locality:
Eonyang, Gyeongsangnam-do, South Korea
 Dimensions: 8.6 x 4.8 cm
 Description:
 Viewed:  6102 Time(s)

AmethystScepterKor.jpg


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am mizunaka




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PostPosted: Sep 28, 2022 16:26    Post subject: The Mizunaka Collection - Calcite  




CalGop.jpg
 Mineral: Calcite
 Locality:
Gopher Valley Quarry, Gopher Valley, McMinnville, Yamhill County, Oregon, USA
 Dimensions: 5.4 x 4.3 cm
 Description:
Calcite that resembles a block of cheese.
 Viewed:  5999 Time(s)

CalGop.jpg


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PostPosted: Sep 29, 2022 15:42    Post subject: The Mizunaka Collection - Rhodochrosite  




RhodoGage.jpg
 Mineral: Rhodochrosite, Gageite
 Locality:
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa
 Dimensions: 5.3 x 4.2 cm
 Description:
Small spheres of rhodochrosite on matrix covered with tiny brownish gageite.
 Viewed:  5941 Time(s)

RhodoGage.jpg


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Tobi
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PostPosted: Sep 30, 2022 02:37    Post subject: Re: The Mizunaka Collection - Calcite  

am mizunaka wrote:
Calcite
Gopher Valley Quarry, Gopher Valley, Yamhill Co., Oregon, USA
Calcite that resembles a block of cheese.
Mike, you should definitely put a bunch of grapes next to it on display ;-)
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James Catmur
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PostPosted: Sep 30, 2022 03:07    Post subject: Re: The Mizunaka Collection - Calcite  

I would add an apple instead, they say:

'An apple without cheese is like a hug without a squeeze'

Tobi wrote:
am mizunaka wrote:
Calcite
Gopher Valley Quarry, Gopher Valley, Yamhill Co., Oregon, USA
Calcite that resembles a block of cheese.
Mike, you should definitely put a bunch of grapes next to it on display ;-)
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am mizunaka




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PostPosted: Sep 30, 2022 03:32    Post subject: Re: The Mizunaka Collection - Calcite  

James Catmur wrote:
I would add an apple instead, they say:

'An apple without cheese is like a hug without a squeeze'

Tobi wrote:
am mizunaka wrote:
Calcite
Gopher Valley Quarry, Gopher Valley, Yamhill Co., Oregon, USA
Calcite that resembles a block of cheese.
Mike, you should definitely put a bunch of grapes next to it on display ;-)


Why stop at fresh fruit ... let's add a glass of wine to the mix ...
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PostPosted: Sep 30, 2022 03:39    Post subject: Re: The Mizunaka Collection  

Grapes + wine

or

Apple + cider (of an alcohlic cariety - Asturian, maybe)
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PostPosted: Sep 30, 2022 16:20    Post subject: The Mizunaka Collection - Quartz  




SmkQtzAmeHop.jpg
 Mineral: Quartz (variety smoky quartz), Quartz (variety amethyst)
 Locality:
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
 Dimensions: 8.5 x 4.7 cm
 Description:
Hoppered smoky quartz and amethyst with tiny inclusions of hematite.
 Viewed:  5756 Time(s)

SmkQtzAmeHop.jpg


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PostPosted: Oct 01, 2022 15:14    Post subject: The Mizunaka Collection - Elbaite  




ElbQtzThin.jpg
 Mineral: Elbaite, Quartz
 Locality:
Himalaya Mine, Gem Hill, Mesa Grande District, San Diego County, California, USA
 Dimensions: 2.4 x 2.6 x .5 cm
 Description:
Small and thin elbaites on and in quartz.
 Viewed:  5632 Time(s)

ElbQtzThin.jpg


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PostPosted: Oct 02, 2022 00:27    Post subject: Re: The Mizunaka Collection  

Hello!

Maybe I'm wrong, but I see a kunzite? Is this really an elbaite specimen? Strange!

Volkmar
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PostPosted: Oct 02, 2022 20:56    Post subject: Re: The Mizunaka Collection  

Volkmar Stingl wrote:
Hello!

Maybe I'm wrong, but I see a kunzite? Is this really an elbaite specimen? Strange!

Volkmar


I am pretty sure that it is an elbaite and not a kunzite. Upon close examination it resembles the crystallographic #309 - Goldschmidt. I could be wrong.
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PostPosted: Oct 03, 2022 02:10    Post subject: Re: The Mizunaka Collection  

Based on the picture, the habit does look like spodumene, but this could just be the angle the picture is taken from. Spodumene should have very strong pleochroism - does the color darken significantly when you look down the c-axis? Can you show us a picture down the c-axis - this would help ID the habit.
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PostPosted: Oct 03, 2022 11:53    Post subject: Re: The Mizunaka Collection  

Matt_Zukowski wrote:
Based on the picture, the habit does look like spodumene, but this could just be the angle the picture is taken from.
Exactly: It looks rather like a kunzite but I have seen other tourmalines from Himalaya Mine that look like that. This is for sure an elbaite and not a spodumene.
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PostPosted: Oct 04, 2022 15:33    Post subject: Re: The Mizunaka Collection - Elbaite  

Looking down the c-axis I do not see a significant color change.
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