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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Heliodor from
Bedford, Westchester County, New York, USA


Classification
Species:Beryl var: Heliodor
Formula:Be3Al2(Si6O18)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Heliodor data
Locality Data:Click here to view Bedford, Westchester County, New York, USA
Data Identifiers
Mindat Occurrence Record ID:80653
Long-form Identifier:1:3:80653:8
GUID (UUID V4):0
Nearest other occurrences of Heliodor
18.5km (11.5 miles) ⓘFillow Quarry, Branchville, Redding, Fairfield County, Connecticut, USA
44.0km (27.4 miles) ⓘ207th Street & Broadway, Manhattan (New York County), New York City, New York, USA
53.2km (33.1 miles) ⓘRoebling Quarry, Upper Merryall, New Milford, Litchfield County, Connecticut, USA
97.7km (60.7 miles) ⓘPegmatite prospects, Collins Hill, Portland, Middlesex County, Connecticut, USA
97.8km (60.8 miles) ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
97.8km (60.8 miles) ⓘSchoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
98.4km (61.2 miles) ⓘCivilian Conservation Corps prospect (CCC prospect; Cook columbite prospect), Haddam, Middlesex County, Connecticut, USA
98.6km (61.3 miles) ⓘHewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex County, Connecticut, USA
98.8km (61.4 miles) ⓘWalden Gem Quarry, Portland, Middlesex County, Connecticut, USA
99.9km (62.1 miles) ⓘAnderson No. 1 Mica Mine, East Hampton, Middlesex County, Connecticut, USA
References
Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1). New York Mineralogical Clubp.65
 
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