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
Savage Gabbro Quarry, Savage, Howard County, Maryland, USA


05374800017367973583580.jpg
Calcite, etc.

Savage Gabbro Quarry, Savage, Howard County, Maryland, USA
05374800017367973583580.jpg
Calcite, etc.

Savage Gabbro Quarry, Savage, Howard County, Maryland, USA
04727970017367973599798.jpg
Calcite, etc.

Savage Gabbro Quarry, Savage, Howard County, Maryland, USA
Locality type:Quarry
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Laumontite1
Gabbro1
Manganese Oxides1
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Savage Gabbro Quarry, Savage, Howard County, Maryland, USA
Data Identifiers
Mindat Occurrence Record ID:207308
Long-form Identifier:1:3:207308:8
GUID (UUID V4):0
Nearest other occurrences of Calcite
14.1km (8.8 miles) ⓘBrighton Dam Road Quarry (Howard-Montgomery Quarry), Howard County, Maryland, USA
14.6km (9.1 miles) ⓘEllicott City, Howard County, Maryland, USA
19.4km (12.0 miles) ⓘSouthern Pit, Hollofield Gabbro Quarries, Hollofield, Baltimore County, Maryland, USA
20.1km (12.5 miles) ⓘPatapsco Glen Construction Site, Woodlawn, Baltimore County, Maryland, USA
21.2km (13.2 miles) ⓘWoodstock, Howard County, Maryland, USA
26.2km (16.3 miles) ⓘMarriottsville Quarry, Hernwood, Baltimore County, Maryland, USA
27.0km (16.8 miles) ⓘJones Falls Quarries, Baltimore City, Maryland, USA
27.5km (17.1 miles) ⓘWoodberry Quarry, Woodberry, Baltimore City, Maryland, USA
29.3km (18.2 miles) ⓘSpringfield Mine (Mr. Tysons Mine; Sykesville Mine), Sykesville, Carroll County, Maryland, USA
29.9km (18.6 miles) ⓘMcMahon Quarry (Greenspring Quarry), Pikesville, Baltimore County, Maryland, USA
References
Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. Area - Issue 5 of Educational series, Maryland Geological Survey. Department of Natural Resources, Maryland Geological Survey. p.1-148.
 
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