Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Chalcocite from
Teeter Quarry, Cumberland Township, Adams County, Pennsylvania, USA


Locality type:Quarry
Classification
Species:Chalcocite
Formula:Cu2S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcocite data
Locality Data:Click here to view Teeter Quarry, Cumberland Township, Adams County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:346716
Long-form Identifier:1:3:346716:9
GUID (UUID V4):0
Nearest other occurrences of Chalcocite
12.0km (7.5 miles) ⓘFairfield Quarry, Fairfield, Hamiltonban Township, Adams County, Pennsylvania, USA
20.6km (12.8 miles) ⓘPine Mountain, Iron Springs, Adams County, Pennsylvania, USA
23.6km (14.7 miles) ⓘRobert D. Repp Prospect (Portland Cement Company), Carroll County, Maryland, USA
24.4km (15.1 miles) ⓘJohn Diggs Copper Mine, Carroll County, Maryland, USA
27.6km (17.1 miles) ⓘClapper Farm Cu-Au occurrence, Reading Township, Adams County, Pennsylvania, USA
30.9km (19.2 miles) ⓘRepp Mine, Frederick County, Maryland, USA
32.2km (20.0 miles) ⓘRoop Mine, New Windsor, Carroll County, Maryland, USA
35.2km (21.9 miles) ⓘLiberty Mine, Libertytown, Frederick County, Maryland, USA
35.7km (22.2 miles) ⓘUnionville Mine, Frederick County, Maryland, USA
35.7km (22.2 miles) ⓘHines Prospects, Frederick County, Maryland, USA
References
Min. Col. PA
Geyer, Smith, Barnes, pgs. 28-30
Jones, Jeri L., Eisenberger, Larry (2006) The Microminerals of Valley Quarry: Gettysburg, Adams County, Pennsylvania. Rocks & Minerals, 81 (3) 229-234 doi:10.3200/rmin.81.3.229-234
 
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