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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Calcite from
Brewer Alaska; Brewster; Mile Seven; Sevenmile Prospect, Seward Mining District, Kenai Peninsula Borough, Alaska, USA


Locality type:Prospect
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Brewer Alaska; Brewster; Mile Seven; Sevenmile Prospect, Seward Mining District, Kenai Peninsula Borough, Alaska, USA
Data Identifiers
Mindat Occurrence Record ID:577691
Long-form Identifier:1:3:577691:7
GUID (UUID V4):0
Nearest other occurrences of Calcite
2.3km (1.4 miles) ⓘMile Seven; Mile 7 1/2 Occurrence, Seward Mining District, Kenai Peninsula Borough, Alaska, USA
6.3km (3.9 miles) ⓘSchoonover; Porcupine Quartz No. 1 Prospect, Hope Mining District, Kenai Peninsula Borough, Alaska, USA
6.3km (3.9 miles) ⓘMile 4; Mile Four Mining Co. Prospect, Seward Mining District, Kenai Peninsula Borough, Alaska, USA
8.5km (5.3 miles) ⓘPorcupine Creek Occurrence, Hope Mining District, Kenai Peninsula Borough, Alaska, USA
9.0km (5.6 miles) ⓘPrimrose Mine, Hope Mining District, Kenai Peninsula Borough, Alaska, USA
11.3km (7.0 miles) ⓘPorcupine; Porcupine Gold Mining Co. Occurrence, Hope Mining District, Kenai Peninsula Borough, Alaska, USA
13.0km (8.1 miles) ⓘBrown Bear Prospect, Hope Mining District, Kenai Peninsula Borough, Alaska, USA
14.6km (9.1 miles) ⓘResurrection Bay Mining Co. Prospects, Seward Mining District, Kenai Peninsula Borough, Alaska, USA
15.1km (9.4 miles) ⓘPeak 5309 No. 1 Occurrence, Hope Mining District, Kenai Peninsula Borough, Alaska, USA
16.7km (10.4 miles) ⓘPeak 5309 No. 3 Occurrence, Hope Mining District, Kenai Peninsula Borough, Alaska, USA
References
(2008) Alaska Resource Data File (ARDF) Open-File Report 2008-1225. US Geological Survey
 
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