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


03050390017369370617470.jpg
Chalcedony

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
03050390017369370617470.jpg
Chalcedony

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
07921770017361091407747.jpg
Chalcedony

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
Locality type:Mine
Classification
Species:Quartz var: Chalcedony
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Weeksite
Associated Minerals Based on Photo Data:
Weeksite3
Quartz3
Data
Mineral Data:Click here to view Chalcedony 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
Data Identifiers
Mindat Occurrence Record ID:248657
Long-form Identifier:1:3:248657:4
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
21.2km (13.2 miles) ⓘCastle Dome Mining District, Castle Dome Mountains, Yuma County, Arizona, USA
52.4km (32.6 miles) ⓘChocolate Mountains, La Paz County, Arizona, USA
54.6km (33.9 miles) ⓘRed Cloud Mine, Silver Mining District, La Paz County, Arizona, USA
65.4km (40.6 miles) ⓘNorth Star Mine (Northstar Mine), Kofa Mining District, Yuma County, Arizona, USA
73.8km (45.9 miles) ⓘC.O.D. Mine (C.O.D. prospect; C.O.D. group of claims), Red Raven Wash, Ocotillo Mine Group, Yuma County, Arizona, USA
76.1km (47.3 miles) ⓘRand prospect, Geyser lode, Ocotillo Mine Group, Yuma County, Arizona, USA
81.2km (50.5 miles) ⓘMidway Well, Paymaster Mining District, Chocolate Mountains, Imperial County, California, USA
83.3km (51.7 miles) ⓘUnnamed Fire Agate site [1], Black Mountains, La Paz County, Arizona, USA
91.3km (56.7 miles) ⓘTwin Buttes Agate fields, Palo Verde, Palo Verde Mining District, Palo Verde Mountains, Imperial County, California, USA
96.0km (59.7 miles) ⓘUnnamed Manganese prospects, Eagletail Mts (Cemetery Ridge) area, Yuma County, Arizona, USA
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 197, 411, 418
 
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