Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Avicennite from
Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA


04068020017363014711576.jpg
Avicennite

Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA
06038710017339888966333.jpg
Avicennite

Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA
03283610017272016325552.jpg
Avicennite, etc.

Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA
02058570017272016343059.jpg
Avicennite

Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA
05269720017367003391500.jpg
Avicennite

Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA
06038710017339888966333.jpg
Avicennite

Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA
03283610017272016325552.jpg
Avicennite, etc.

Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA
02058570017272016343059.jpg
Avicennite

Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA
04068020017363014711576.jpg
Avicennite

Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA
06038710017339888966333.jpg
Avicennite

Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA
03283610017272016325552.jpg
Avicennite, etc.

Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA
02058570017272016343059.jpg
Avicennite

Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA
Locality type:Prospect
Classification
Species:Avicennite
Formula:Tl23+O3
Comments:microscopic, but clearly visible, red and black masses in a siliceous matrix
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Chert15
Parapierrotite6
Quartz4
Tripuhyite3
Stibiconite2
Arseniosiderite2
Hydroxycalcioroméite1
Kermesite1
Hematite1
Vrbaite1
Data
Mineral Data:Click here to view Avicennite data
Locality Data:Click here to view Lookout Pass Thallium prospect, Little Valley, Lookout Pass Mining District, Tooele County, Utah, USA
Photo GalleryView Gallery (24 photos)
Data Identifiers
Mindat Occurrence Record ID:1389
Long-form Identifier:1:3:1389:5
GUID (UUID V4):0
References
Mineralogical Society of America - Handbook of Mineralogy
King, Vandall T., Robinson, George W. (1989) What's New in Minerals? - Sixteenth Annual Rochester Academy of Science Mineralogical Symposium. The Mineralogical Record, 20 (5) 387-399
King, N. R. (2014, October). THE MINERAL ASSEMBLAGE FROM LOOKOUT PASS AREA, SHEEPROCK MOUNTAINS, TOOELE CO., UTAH. In 2014 GSA Annual Meeting in Vancouver, British Columbia.
 
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