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The Mizunaka Collection
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Fiebre Verde




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PostPosted: Oct 11, 2018 21:56    Post subject: Re: The Mizunaka Collection  

am mizunaka wrote:
Fiebre Verde wrote:
A Bogotá-based mineral dealer I work with told me that the locality of these golden humboldtine included quartz is uncertain - it could be either from Boyacá or Santander.
He also claims there was only one single find that was made about 15 years ago.
The material on display in Denver could actually come from a collection.
I will probably get more information on this find in a few weeks time.
Gérard


Thanks for the information. The exact locality has been questioned by others.

I did some investigation in Bogota.
The first word of the locality name sounds a bit strange.
"Cabiche, Quípama, Occidente Province, Boyacá Department, Colombia"
"Cabiche" is one letter away from "Caliche"
https://en.wikipedia.org/wiki/Caliche
It's the same word in Spanish e.g. Caliche.
Is "Cabiche" a typo, in reference to the original clay-like deposit on the quartz before cleaning?
I showed the photo to four mineral dealers in Bogota.
2 dealers had never seen this kind of quartz
2 other dealers remember having seen similar material a long time ago.

Would be worth double checking with the dealers who had these quartz in Denver how they ended up in their hands...

Gérard
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am mizunaka




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PostPosted: Oct 11, 2018 22:01    Post subject: Re: The Mizunaka Collection  

Fiebre Verde wrote:
am mizunaka wrote:
Fiebre Verde wrote:
A Bogotá-based mineral dealer I work with told me that the locality of these golden humboldtine included quartz is uncertain - it could be either from Boyacá or Santander.
He also claims there was only one single find that was made about 15 years ago.
The material on display in Denver could actually come from a collection.
I will probably get more information on this find in a few weeks time.
Gérard


Thanks for the information. The exact locality has been questioned by others.

I did some investigation in Bogota.
The first word of the locality name sounds a bit strange.
"Cabiche, Quípama, Occidente Province, Boyacá Department, Colombia"
"Cabiche" is one letter away from "Caliche"
https://en.wikipedia.org/wiki/Caliche
It's the same word in Spanish e.g. Caliche.
Is "Cabiche" a typo, in reference to the original clay-like deposit on the quartz before cleaning?
I showed the photo to four mineral dealers in Bogota.
2 dealers had never seen this kind of quartz
2 other dealers remember having seen similar material a long time ago.

Would be worth double checking with the dealers who had these quartz in Denver how they ended up in their hands...

Gérard


Thanks for the update.
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am mizunaka




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PostPosted: Oct 12, 2018 01:06    Post subject: The Mizunaka Collection - Rhodochrosite  

Rhodochrosite "fingers".


RhodoFngrs.jpg
 Mineral: Rhodochrosite
 Locality:
Wessels Mine, Hotazel, Kalahari manganese field (KMF), Northern Cape Province, South Africa
 Dimensions: 3.7 x 1.9 cm
 Description:
 Viewed:  263 Time(s)

RhodoFngrs.jpg


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crosstimber
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PostPosted: Oct 12, 2018 10:57    Post subject: Re: The Mizunaka Collection  

Beautiful rhodo Mike.
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am mizunaka




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PostPosted: Oct 12, 2018 17:48    Post subject: Re: The Mizunaka Collection  

crosstimber wrote:
Beautiful rhodo Mike.


Thanks Michael!
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am mizunaka




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PostPosted: Oct 15, 2018 01:18    Post subject: The Mizunaka Collection - quartz  

Water clear quartz with inclusions of rutile. The rutile appears to have replaced or coated ilmenite or hematite crystals.


QtzRutSw.jpg
 Mineral: Quartz, Rutile
 Locality:
Punta d'Aurona, Brig District, Wallis (Valais), Switzerland
 Dimensions: 9.7 x 6.2 cm
 Description:
 Viewed:  64 Time(s)

QtzRutSw.jpg



QtzRutSwDet.jpg
 Mineral: Quartz, Rutile
 Locality:
Punta d'Aurona, Brig District, Wallis (Valais), Switzerland
 Description:
Close up of inclusion on an exposed portion on the back of the specimen.
 Viewed:  64 Time(s)

QtzRutSwDet.jpg


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