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
Knob Hill Mine, Republic Mining District, Ferry County, Washington, USA


Locality type:Mine
Classification
Species:Quartz var: Chalcedony
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcedony data
Locality Data:Click here to view Knob Hill Mine, Republic Mining District, Ferry County, Washington, USA
Data Identifiers
Mindat Occurrence Record ID:102718
Long-form Identifier:1:3:102718:1
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
0.7km (0.4 miles) ⓘLittle Cove Mine, Republic Mining District, Ferry County, Washington, USA
24.8km (15.4 miles) ⓘKettle Mine, Curlew Mining District, Ferry County, Washington, USA
37.7km (23.4 miles) ⓘEagle Lease, Myer Creek Mining District, Okanogan County, Washington, USA
48.4km (30.1 miles) ⓘMarble quarry (Kettle River Rock quarry), Grand Forks, Greenwood Mining Division, British Columbia, Canada
49.8km (30.9 miles) ⓘFirst Thought Mine, Orient Mining District, Stevens County, Washington, USA
68.2km (42.4 miles) ⓘRock Candy Mine, Grand Forks, Greenwood Mining Division, British Columbia, Canada
94.2km (58.6 miles) ⓘDusty Mac gold-silver mine, Okanagan Falls, Osoyoos Mining Division, British Columbia, Canada
References
Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.p.121
Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.pages 35, 95, 131, 136, 166, 174
Derkey, Robert E., Joseph, Nancy L., Lasmanis, Raymond (1990, November) Metal Mines of Washington - Preliminary Report. Open File Report 90-18. Washington Division of Geology and Earth Resources
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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