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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Weeksite from
Red Knob Mine (Red Knob prospect; Red Knob claims), Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA


06194020017271927621174.jpg
Weeksite

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
08440660017272026132979.jpg
Weeksite, etc.

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
03149190017272044652395.jpg
Weeksite, etc.

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
02658280017363343437569.jpg
Weeksite, etc.

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
06194020017271927621174.jpg
Weeksite

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
08440660017272026132979.jpg
Weeksite, etc.

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
03149190017272044652395.jpg
Weeksite, etc.

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
02658280017363343437569.jpg
Weeksite, etc.

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
06194020017271927621174.jpg
Weeksite

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
08440660017272026132979.jpg
Weeksite, etc.

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
03149190017272044652395.jpg
Weeksite, etc.

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
06974430017363343431936.jpg
Weeksite, etc.

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
Locality type:Mine
Classification
Species:Weeksite
Formula:K2(UO2)2(Si5O13) · 4H2O
Comments:Occurs coating and intergrown with chalcedony, etc.
Habit:Radial aggregates of fibrous to acicular crystals
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Carnotite
Chalcedony
Wulfenite
Associated Minerals Based on Photo Data:
Quartz9
- var Chalcedony3
Fluorite3
Data
Mineral Data:Click here to view Weeksite data
Locality Data:Click here to view Red Knob Mine (Red Knob prospect; Red Knob claims), Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
Photo GalleryView Gallery (5 photos)
Data Identifiers
Mindat Occurrence Record ID:248649
Long-form Identifier:1:3:248649:9
GUID (UUID V4):0
References
Honea, Russell M. (1959) New data on gastunite, an alkali uranyl silicate. American Mineralogist, 44 (9-10) 1047-1056
Outerbridge, W. F., Staatz, M. H., Meyrowitz, R., Pommer, A. M. (1960) Weeksite, a new uranium silicate from the Thomas Range, Juab County, Utah. American Mineralogist, 45 (1-2) 39-52
Anthony, John W.; Williams, Sidney A.; Bideaux, Richard A.; Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.pages 127, 155, 411, 418
 
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