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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Opal from
Diatomite Mine (Bates Creek), French Mining District, Owyhee County, Idaho, USA


Locality type:Mine
Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Diatomite Mine (Bates Creek), French Mining District, Owyhee County, Idaho, USA
Data Identifiers
Mindat Occurrence Record ID:997494
Long-form Identifier:1:3:997494:4
GUID (UUID V4):0
Nearest other occurrences of Opal
36.5km (22.7 miles) ⓘDiatomite Occurrence (MRDS - 10106007), Reynolds Area, Owyhee County, Idaho, USA
39.4km (24.5 miles) ⓘPumicite Deposit (MRDS - 10089547), Owyhee County, Idaho, USA
41.8km (26.0 miles) ⓘSheaville Zeolite Occurrence, Malheur County, Oregon, USA
52.0km (32.3 miles) ⓘOpaline, Owyhee County, Idaho, USA
54.7km (34.0 miles) ⓘPumice Occurrence (MRDS - 10070280), Marsing Area, Owyhee County, Idaho, USA
67.3km (41.8 miles) ⓘDiatomite Occurrence (MRDS - 10078458), Riddle Area, Owyhee County, Idaho, USA
76.2km (47.4 miles) ⓘDiatomite Occurrence (MRDS - 10089089), Boise Mining District, Ada County, Idaho, USA
78.8km (49.0 miles) ⓘSuccor Creek, Malheur County, Oregon, USA
85.7km (53.3 miles) ⓘUnnamed Diatomite occurrence [1], Boise Mining District, Ada County, Idaho, USA
87.1km (54.1 miles) ⓘOwyhee Dam, Lake Owyhee State Park, Malheur County, Oregon, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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