| View previous topic :: View next topic |
| Author |
Message |
am mizunaka
Joined: 09 Apr 2010
Posts: 2208
Location: USA
|
 Posted: May 14, 2019 03:18 Post subject: The Mizunaka Collection - Quartz |
|
|
Quartz capped with magnesite with uvite crystals.
| Mineral: | Quartz, Uvite, Magnesite |
| Locality: | | Pomba Pit, Serra das Éguas, Brumado, Bahia, Northeast Region, Brazil |  |
|
| Dimensions: | 13.8 x 6.0 cm |
| Description: |
|
| Viewed: |
18188 Time(s) |
|
|
|
| Back to top |
|
 |
am mizunaka
Joined: 09 Apr 2010
Posts: 2208
Location: USA
|
| Posted: May 16, 2019 02:26 Post subject: The Mizunaka Collection - Rhodochrosite |
|
|
| Mineral: | Rhodochrosite |
| Locality: | | Potosí Mine, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico | |
|
| Dimensions: | 10.5 x 5.4 cm |
| Description: |
|
| Viewed: |
18076 Time(s) |
|
| Mineral: | Rhodochrosite |
| Locality: | | Potosí Mine, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico | |
|
| Description: |
| Close up of rhodochrosite crystals. |
|
| Viewed: |
18052 Time(s) |
|
|
|
| Back to top |
|
|
Fiebre Verde
Joined: 11 Sep 2013
Posts: 944
Location: Paris Area
|
| Posted: May 16, 2019 04:06 Post subject: Re: The Mizunaka Collection |
|
|
Very aesthetic specimen Mike!
How does the color contrast between the 2 rhodo groups (red vs. pinkish) look in real life?
Gerard
|
|
| Back to top |
|
|
am mizunaka
Joined: 09 Apr 2010
Posts: 2208
Location: USA
|
| Posted: May 16, 2019 13:06 Post subject: Re: The Mizunaka Collection |
|
|
| Fiebre Verde wrote: | Very aesthetic specimen Mike!
How does the color contrast between the 2 rhodo groups (red vs. pinkish) look in real life?
Gerard |
The red rhodochrosite is pretty accurate in color. The lighter pink rhodochrosite is paler in normal light.
|
|
| Back to top |
|
|
am mizunaka
Joined: 09 Apr 2010
Posts: 2208
Location: USA
|
| Posted: May 17, 2019 13:38 Post subject: The Mizunaka Collection - Calcite |
|
|
Calcite replacing aragonite with tiny siderite crystals.
| Mineral: | Calcite, Siderite |
| Locality: | | Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Russia | |
|
| Dimensions: | 22.5 x 17.0 cm |
| Description: |
|
| Viewed: |
17875 Time(s) |
|
|
|
| Back to top |
|
|
am mizunaka
Joined: 09 Apr 2010
Posts: 2208
Location: USA
|
| Posted: 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
| Mineral: | Fluorite, Quartz, Calcite |
| Locality: | | Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico | |
|
| Dimensions: | 15.2 x 8.3 cm |
| Description: |
|
| Viewed: |
23145 Time(s) |
|
|
|
| Back to top |
|
|
am mizunaka
Joined: 09 Apr 2010
Posts: 2208
Location: USA
|
| Posted: May 20, 2019 02:56 Post subject: The Mizunaka Collection - Quartz |
|
|
Quartz almost totally replacing elbaite. A thin veneer of elbaite only remains.
| Mineral: | Quartz, Elbaite |
| Locality: | | Urubu Mine, Monte Belo, Itinga, Jequitinhonha, Minas Gerais, Brazil | |
|
| Dimensions: | 5.3 x 2.4 cm |
| Description: |
|
| Viewed: |
23113 Time(s) |
|
|
|
| Back to top |
|
|
Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4248
Location: Germany
|
| Posted: 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!
|
|
| Back to top |
|
|
am mizunaka
Joined: 09 Apr 2010
Posts: 2208
Location: USA
|
| Posted: 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!
|
|
| Back to top |
|
|
am mizunaka
Joined: 09 Apr 2010
Posts: 2208
Location: USA
|
| Posted: May 21, 2019 02:49 Post subject: The Mizunaka Collection - Fluorite |
|
|
Fluorite with calcite.
| Mineral: | Fluorite, Calcite |
| Locality: | | Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico | |
|
| Dimensions: | 13.0 x 11.7 cm |
| Description: |
|
| Viewed: |
22909 Time(s) |
|
|
|
| Back to top |
|
|
am mizunaka
Joined: 09 Apr 2010
Posts: 2208
Location: USA
|
| Posted: May 25, 2019 03:31 Post subject: The Mizunaka Collection - Quartz |
|
|
Sceptered quartz on matrix.
| 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: |
22702 Time(s) |
|
|
|
| Back to top |
|
|
am mizunaka
Joined: 09 Apr 2010
Posts: 2208
Location: USA
|
| Posted: May 26, 2019 03:39 Post subject: The Mizunaka Collection - Fluorite |
|
|
Fluorite on quartz with most of the fluorite coated with micro-crystalline quartz.
| Mineral: | Fluorite, Quartz |
| Locality: | | Deer Trail Mine, Cottonwood Creek, Baldy Peak (Mount Baldy), Tushar Mountains, Marysvale, Mount Baldy District, Piute County, Utah, USA | |
|
| Dimensions: | 6.9 x 5.1 cm |
| Description: |
|
| Viewed: |
22549 Time(s) |
|
|
|
| Back to top |
|
|
am mizunaka
Joined: 09 Apr 2010
Posts: 2208
Location: USA
|
| Posted: May 28, 2019 21:15 Post subject: The Mizunaka Collection - Quartz |
|
|
| Mineral: | Quartz, Tetrahedrite |
| Locality: | | Huayllapon Mine (Huallapon Mine), Pasto Bueno, Pampas District, Pallasca Province, Ancash Department, Peru | |
|
| Dimensions: | 6.0 x 2.4 cm |
| Description: |
|
| Viewed: |
22308 Time(s) |
|
|
|
| Back to top |
|
|
Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4248
Location: Germany
|
| Posted: May 29, 2019 02:59 Post subject: Re: The Mizunaka Collection |
|
|
| Wonderful Deer Trail specimen, very beautiful!
|
|
| Back to top |
|
|
am mizunaka
Joined: 09 Apr 2010
Posts: 2208
Location: USA
|
| Posted: May 29, 2019 13:43 Post subject: Re: The Mizunaka Collection |
|
|
| Tobi wrote: | | Wonderful Deer Trail specimen, very beautiful! |
Thanks Tobi!
|
|
| Back to top |
|
|
|
FAQ 
Register
Log in
Forgotten your password?
