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About calaverite from Creeple Creek
  
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Roger Warin




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PostPosted: Oct 03, 2021 07:26    Post subject: About calaverite from Creeple Creek  

Hello,
I had the chance to observe under my binocular this beautiful sample of calaverite from Creeple Creek, Colorado.
I have 3 questions :
1) Secondary mineral = fluorite?
2) Calaverite is sometimes covered with fluorite, like in lasagna?
3) is there a beginning of alteration in gold?

Thank you.



Calaverite#3-01B_R.jpg
 Mineral: Calaverite
 Description:
 Viewed:  431 Time(s)

Calaverite#3-01B_R.jpg



Calaverite#4-01B_R.jpg
 Mineral: Calaverite
 Description:
 Viewed:  429 Time(s)

Calaverite#4-01B_R.jpg


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Bob Carnein




Joined: 22 Aug 2013
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Location: Florissant, CO


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PostPosted: Oct 03, 2021 09:42    Post subject: Re: About calaverite from Creeple Creek  

Your calaverite appears to be coated with chalcedony, which is pretty common at Cripple Creek/Victor. For me, the photo isn't clear enough to show alteration to gold.
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Roger Warin




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PostPosted: Oct 03, 2021 13:53    Post subject: Re: About calaverite from Creeple Creek  

Thank you very much for your relevant response.
I replaced the specimen under the lens and here are two photos.
1) 8X magnification
2) 100 X.
Without translation between images. The crystal is in the center.

With magnification, some faces lose their original colors.
Light plays a big role.
I am using ring lighting with annular LED illuminators.



Calaverite#7-01-AB1_R.jpg
 Mineral: Calaverite
 Description:
 Viewed:  334 Time(s)

Calaverite#7-01-AB1_R.jpg



Calaverite#5-01-A1b_R.jpg
 Mineral: Calaverite
 Description:
 Viewed:  336 Time(s)

Calaverite#5-01-A1b_R.jpg


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