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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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 Posted: Jan 20, 2021 03:40 Post subject: Re: The Mizunaka Collection |
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| Jim Wilkinson wrote: | | This is one of most elegant examples of Wise fluorites I've seen. Thanks for sharing it! |
Thanks Jim!
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jan 20, 2021 03:43 Post subject: The Mizunaka Collection - Quartz |
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| Mineral: | Quartz (variety amethyst) |
| Locality: | | Little Giant Basin, Silverton, Animas District, San Juan County, Colorado, USA |  |
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| Dimensions: | 7.2 x 6.3 cm |
| Description: |
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11302 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jan 22, 2021 01:12 Post subject: The Mizunaka Collection - Quartz |
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| Mineral: | Quartz (variety ametrine) |
| Locality: | | Anahi Mine, La Gaiba District, Sandoval Province, Santa Cruz Department, Bolivia | |
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| Dimensions: | 9.6 x 5.9 cm |
| Description: |
| Double terminated crystal with purple and yellow hues. |
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11187 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jan 25, 2021 04:13 Post subject: Re: The Mizunaka Collection - Quartz |
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Quartz
| Mineral: | Quartz (variety amethyst), Quartz (variety smoky) |
| Locality: | | Little Gem Mine, Boulder Batholith, Jefferson County, Montana, USA | |
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| Dimensions: | 8.8 x 3.3 cm |
| Description: |
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11036 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jan 27, 2021 03:23 Post subject: The Mizunaka Collection - Quartz |
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| Mineral: | Quartz (variety smoky quartz), Feldspar, Chlorite |
| Locality: | | Hospental, Urseren, Uri, Hospental, Urseren, Uri, Switzerland | |
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| Dimensions: | 6.9 x 4.2 cm |
| Description: |
| Glassy smoky quartz on feldspar that has a dusting of chlorite. |
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11021 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jan 28, 2021 01:48 Post subject: The Mizunaka Collection - Beryl |
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| Mineral: | Beryl (variety emerald) |
| Locality: | | Leckbachgraben, Nasenkopf Mountain, Bramberg am Wildkogel, Zell am See District, Hohe Tauern, Salzburg, Austria | |
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| Dimensions: | 9.0 x 5.5 cm |
| Description: |
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10872 Time(s) |
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Bob Morgan
Joined: 18 Jan 2018
Posts: 251
Location: Savannah, Georgia
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| Posted: Jan 28, 2021 08:41 Post subject: Re: The Mizunaka Collection |
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| It appears that there are different surfaces on alternate termination rhombohedral faces. Perhaps a selective deposition of chlorite on alternate faces. That would be a rarity. Is that the case?
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jan 28, 2021 17:39 Post subject: Re: The Mizunaka Collection |
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| Bob Morgan wrote: | | It appears that there are different surfaces on alternate termination rhombohedral faces. Perhaps a selective deposition of chlorite on alternate faces. That would be a rarity. Is that the case? |
There are some faces that have very very little deposition of chlorite but the entire termination is covered.
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Bob Morgan
Joined: 18 Jan 2018
Posts: 251
Location: Savannah, Georgia
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| Posted: Jan 28, 2021 17:41 Post subject: Re: The Mizunaka Collection |
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| Thanks
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Jan 29, 2021 01:45 Post subject: The Mizunaka Collection - Rhodochrosite |
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| Mineral: | Rhodochrosite, Pyrite |
| Locality: | | Oppu Mine, Nishimeya-mura, Nakatsugaru District, Aomori Prefecture, Tohoku Region, Honshu Island, Japan | |
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| Dimensions: | 8.7 x 7.5 cm |
| Description: |
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10729 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Feb 01, 2021 23:46 Post subject: The Mizunaka Collection - Gold |
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One of the few pieces that can be attributed to a specific vein (Mariposa Kean) at the locality. This was conveyed to me from the dealer.
| Mineral: | Gold |
| Locality: | | Round Mountain Mine, Round Mountain, Round Mountain District, Nye County, Nevada, USA | |
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| Dimensions: | 2.7 x 2.1 cm |
| Description: |
| The wire is approximately 3.5 cm long. |
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10627 Time(s) |
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| Mineral: | Gold |
| Locality: | | Round Mountain Mine, Round Mountain, Round Mountain District, Nye County, Nevada, USA | |
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10648 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4248
Location: Germany
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| Posted: Feb 04, 2021 03:10 Post subject: Re: The Mizunaka Collection |
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Very unusual and interesting gold specimen, is this a pseudomorph?
And again a beautiful Oppu Mine rhodo - I love it!
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Feb 04, 2021 04:14 Post subject: Re: The Mizunaka Collection |
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| Tobi wrote: | Very unusual and interesting gold specimen, is this a pseudomorph?
And again a beautiful Oppu Mine rhodo - I love it! |
Thanks Tobi!
The gold isn't a pseudomorph. I don't think that it is a true gold wire, but a series of stacked crystals forming a column that bends around the matrix.
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am mizunaka
Joined: 09 Apr 2010
Posts: 2209
Location: USA
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| Posted: Feb 04, 2021 04:20 Post subject: The Mizunaka Collection - Quartz |
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| Mineral: | Quartz |
| Locality: | | Zagi Mountain, Hameed Abad Kafoor Dheri, Peshawar, Khyber Pakhtunkhwa, Pakistan | |
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| Dimensions: | 4.5 x 3.2 cm |
| Description: |
| Inclusions of either riebeckite or tourmaline coloring the quartz blue. A complete floater. |
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10460 Time(s) |
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Sante Celiberti
Joined: 04 Oct 2019
Posts: 699
Location: Tuscany
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| Posted: Feb 04, 2021 07:00 Post subject: Re: The Mizunaka Collection |
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| Outstanding color for a possible faden quartz! :-)
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