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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Chrysocolla from
Springfield Mine (Mr. Tysons Mine; Sykesville Mine), Sykesville, Carroll County, Maryland, USA


Locality type:Mine
Classification
Species:Chrysocolla
Formula:Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chrysocolla data
Locality Data:Click here to view Springfield Mine (Mr. Tysons Mine; Sykesville Mine), Sykesville, Carroll County, Maryland, USA
Data Identifiers
Mindat Occurrence Record ID:201951
Long-form Identifier:1:3:201951:2
GUID (UUID V4):0
Nearest other occurrences of Chrysocolla
1.8km (1.1 miles) ⓘCarroll Mine, Sykesville, Carroll County, Maryland, USA
7.6km (4.7 miles) ⓘMineral Hill Mine, Louisville, Carroll County, Maryland, USA
14.7km (9.1 miles) ⓘPatapsco Mine (Finksburg Mine; Orchard Mine), Patapsco Mines, Finksburg, Carroll County, Maryland, USA
24.2km (15.1 miles) ⓘDolyhyde Mine (Dolly Hyde Mine), Libertytown, Frederick County, Maryland, USA
25.0km (15.5 miles) ⓘLiberty Mine, Libertytown, Frederick County, Maryland, USA
26.6km (16.5 miles) ⓘBare Hills Copper Mine (Smith Avenue Copper Mine), Bare Hills, Baltimore County, Maryland, USA
30.5km (19.0 miles) ⓘJohn Diggs Copper Mine, Carroll County, Maryland, USA
40.0km (24.9 miles) ⓘHunting Hill Quarry, Rockville, Montgomery County, Maryland, USA
50.8km (31.6 miles) ⓘTeeter Quarry, Cumberland Township, Adams County, Pennsylvania, USA
56.4km (35.1 miles) ⓘFairfield Quarry, Fairfield, Hamiltonban Township, Adams County, Pennsylvania, USA
References
Mines of the Washington D.C Area
 
and/or  
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