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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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 Posted: Mar 17, 2022 16:22 Post subject: The Mizunaka Collection - Crocoite |
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| Mineral: | Crocoite |
| Locality: | | Adelaide Mine, Dundas mineral field, Zeehan District, West Coast Council, Tasmania, Australia |  |
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| Dimensions: | 5.0 x 3.4 cm |
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6371 Time(s) |
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Sante Celiberti
Joined: 04 Oct 2019
Posts: 699
Location: Tuscany
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| Posted: Mar 17, 2022 16:53 Post subject: Re: The Mizunaka Collection |
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| Wonderful isolated and gemmy crystals!
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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| Posted: Mar 17, 2022 18:16 Post subject: Re: The Mizunaka Collection - Crocoite |
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| Sante Celiberti wrote: | | Wonderful isolated and gemmy crystals! |
Thanks Sante! That was definitely two of the reasons why we picked this one up.
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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| Posted: Mar 18, 2022 15:29 Post subject: The Mizunaka Collection - Rhodochrosite |
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| Mineral: | Rhodochrosite, Fluorite |
| Locality: | | Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico | |
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| Dimensions: | 2.6 x 1.2 cm |
| Description: |
| Glassy rhodochrosite along with a scattering of clear fluorite crystals with the largest near the base of the specimen. |
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6248 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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| Posted: Mar 22, 2022 01:39 Post subject: The Mizunaka Collection - Fluorite |
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| Mineral: | Fluorite |
| Locality: | | Minerva I Mine, Ozark-Mahoning group, Cave-in-Rock Sub-District, Hardin County, Illinois, USA | |
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| Dimensions: | 3.4 x 2.6 cm |
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| Viewed: |
6179 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4102
Location: Germany
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| Posted: Mar 22, 2022 02:20 Post subject: Re: The Mizunaka Collection - Fluorite |
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| A beautiful little Minerva jewel, Mike, great colour, transparency & composition. And your photography reveals the inner beauty of the specimen!
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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| Posted: Mar 22, 2022 13:38 Post subject: Re: The Mizunaka Collection - Fluorite |
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| Tobi wrote: | | A beautiful little Minerva jewel, Mike, great colour, transparency & composition. And your photography reveals the inner beauty of the specimen! |
Thanks Tobi! It's a challenge showing the jewel clarity and the color/zoning of the fluorite.
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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| Posted: Mar 28, 2022 23:26 Post subject: The Mizunaka Collection- Quartz |
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| Mineral: | Quartz |
| Locality: | | Shigar Valley, Shigar District, Gilgit-Baltistan (Northern Areas), Pakistan | |
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| Dimensions: | 13.5 x 9.5 x 7.0 cm |
| Description: |
| Quartz with a slightly iridescent yellowish coating. |
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| Viewed: |
5977 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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| Posted: Apr 01, 2022 23:43 Post subject: The Mizunaka Collection - Rhodochrosite |
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| Mineral: | Rhodochrosite |
| Locality: | | Cassandra Mines, Chalkidiki Prefecture, Macedonia Department, Greece | |
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| Dimensions: | 13.1 x 5.2 cm |
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| Viewed: |
5886 Time(s) |
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| Mineral: | Rhodochrosite |
| Locality: | | Cassandra Mines, Chalkidiki Prefecture, Macedonia Department, Greece | |
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| Description: |
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| Viewed: |
5907 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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| Posted: Apr 04, 2022 17:44 Post subject: The Mizunaka Collection - Quartz |
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Quartz exhibiting growth interference along with what appears to quartz replacing andradite.
| Mineral: | Quartz |
| Locality: | | Bor Pit, Dalnegorsk B deposit, Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Russia | |
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| Dimensions: | 9.8 x 3.8 cm |
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| Viewed: |
5763 Time(s) |
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| Mineral: | Quartz |
| Locality: | | Bor Pit, Dalnegorsk B deposit, Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Russia | |
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| Dimensions: | 9.8 x 3.8 cm |
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| Viewed: |
5757 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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| Posted: Apr 06, 2022 23:44 Post subject: The Mizunaka Collection - Rhodochrosite |
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| Mineral: | Rhodochrosite, Fluorite |
| Locality: | | Durango Mine, Durango and Moorlight Group of Claims, Phillipsburg, Phillipsburg District, Granite County, Montana, USA | |
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| Dimensions: | 10.0 x 8.4 cm |
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| Viewed: |
5669 Time(s) |
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| Mineral: | Rhodochrosite, Fluorite |
| Locality: | | Durango Mine, Durango and Moorlight Group of Claims, Phillipsburg, Phillipsburg District, Granite County, Montana, USA | |
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| Description: |
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| Viewed: |
5670 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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| Posted: Apr 22, 2022 23:12 Post subject: The Mizunaka Collection - Rhodochrosite |
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| Mineral: | Rhodochrosite |
| Locality: | | Broken Hill, Yancowinna County, New South Wales, Australia | |
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| Dimensions: | 11.2 x 9.1 cm |
| Description: |
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| Viewed: |
5481 Time(s) |
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| Mineral: | Rhodochrosite |
| Locality: | | Broken Hill, Yancowinna County, New South Wales, Australia | |
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| Description: |
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| Viewed: |
5479 Time(s) |
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Josele
Joined: 10 Apr 2012
Posts: 407
Location: Tarifa, Spain
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| Posted: Apr 24, 2022 06:00 Post subject: Re: The Mizunaka Collection |
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Am, nice specimens and superb photos, it's a pleasure to see them, congratulations.
In last photos, is rhodochrosite replacing a vegetal structure as occurs in travertine? Or it is an inorganic crystal growth habit?
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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| Posted: Apr 24, 2022 22:05 Post subject: Re: The Mizunaka Collection - Rhodochrosite |
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| Josele wrote: | Am, nice specimens and superb photos, it's a pleasure to see them, congratulations.
In last photos, is rhodochrosite replacing a vegetal structure as occurs in travertine? Or it is an inorganic crystal growth habit? |
Thanks Josele! I don't believe that it is a vegetal replacement. It is probably a replacement of some other mineral or an elongated rhodo crystal habit.
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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| Posted: Apr 26, 2022 04:16 Post subject: Re: The Mizunaka Collection - Quartz |
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| Mineral: | Quartz |
| Locality: | | Agate Creek, Etheridge Shire, Queensland, Australia | |
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| Dimensions: | 16.0 x 11.0 cm |
| Description: |
| Green and yellowish-green quartz with an open cavity on the back of the specimen. |
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| Viewed: |
5276 Time(s) |
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| Mineral: | Quartz |
| Locality: | | Agate Creek, Etheridge Shire, Queensland, Australia | |
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| Dimensions: | 16.0 x 11.0 cm |
| Description: |
| Side view of the specimen showing the void. |
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| Viewed: |
5278 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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| Posted: Apr 28, 2022 04:07 Post subject: The Mizunaka Collection - Faden Quartz |
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| Mineral: | Quartz |
| Locality: | | Balochistan (Baluchistan), Pakistan | |
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| Dimensions: | 10.4 x 8.3 cm |
| Description: |
| Faden quartz on matrix sprinkled with a number of other smaller quartz crystals. |
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| Viewed: |
5159 Time(s) |
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| Mineral: | Quartz |
| Locality: | | Balochistan (Baluchistan), Pakistan | |
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| Description: |
| Detail of faden quartz showing what appears to be a negative quartz crystal or maybe an included crystal. |
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| Viewed: |
5153 Time(s) |
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Josele
Joined: 10 Apr 2012
Posts: 407
Location: Tarifa, Spain
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| Posted: Apr 29, 2022 15:20 Post subject: Re: The Mizunaka Collection |
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Olé, at last a faden quartz on matrix!
The elongated "inclusion" seems crystallographically parallel to the main crystal, in which case must be a negative crystal.
A solid crystal parallel to the big one would belong to the same crystalline net and would be invisible.
Am, one question, there is any other faden between the small crystals?
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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| Posted: Apr 29, 2022 19:19 Post subject: Re: The Mizunaka Collection |
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| Josele wrote: | Olé, at last a faden quartz on matrix!
The elongated "inclusion" seems crystallographically parallel to the main crystal, in which case must be a negative crystal.
A solid crystal parallel to the big one would belong to the same crystalline net and would be invisible.
Am, one question, there is any other faden between the small crystals? |
Thanks for the clarification regarding the negative crystal. There appears to be two smaller quartz crystals on the matrix that have a thin faden line.
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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| Posted: Apr 29, 2022 22:38 Post subject: The Mizunaka Collection - Rhodochrosite |
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| Mineral: | Rhodochrosite, Quartz |
| Locality: | | Algonquin Mine, Phillipsburg, Phillipsburg District, Granite County, Montana, USA | |
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| Dimensions: | 9.2 x 8.9 cm |
| Description: |
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| Viewed: |
4976 Time(s) |
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| Mineral: | Rhodochrosite, Quartz |
| Locality: | | Algonquin Mine, Phillipsburg, Phillipsburg District, Granite County, Montana, USA | |
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| Description: |
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| Viewed: |
4975 Time(s) |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2037
Location: USA
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| Posted: May 01, 2022 16:40 Post subject: The Mizunaka Collection - Quartz |
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| Mineral: | Quartz, Pyrite, Fluorite |
| Locality: | | Shangbao Mine, Leiyang, Hengyang Prefecture, Hunan Province, China | |
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| Dimensions: | 9.9 x 9.8 cm |
| Description: |
| Radiating cluster of lustrous quartz with pyrite and fluorite. |
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| Viewed: |
4834 Time(s) |
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