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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Bismutite from
Rock Landing Quarry (Capt. Rohrback Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA


Locality type:Quarry
Classification
Species:Bismutite
Formula:(BiO)2CO3
Comments:Found "very sparingly".
Abundance at site:Very Rare
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Bismutite data
Locality Data:Click here to view Rock Landing Quarry (Capt. Rohrback Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:830453
Long-form Identifier:1:3:830453:7
GUID (UUID V4):0
Nearest other occurrences of Bismutite
2.8km (1.7 miles) ⓘChrysoberyl locality, Haddam, Middlesex County, Connecticut, USA
5.1km (3.1 miles) ⓘSlocum prospect, East Hampton, Middlesex County, Connecticut, USA
6.2km (3.9 miles) ⓘHewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex County, Connecticut, USA
9.7km (6.0 miles) ⓘNathan Hall Quarry, East Hampton, Middlesex County, Connecticut, USA
11.0km (6.8 miles) ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
11.3km (7.0 miles) ⓘPelton's Quarry, Portland, Middlesex County, Connecticut, USA
13.8km (8.6 miles) ⓘCase Quarry No. 2, Case Quarries, Portland, Middlesex County, Connecticut, USA
13.9km (8.6 miles) ⓘCase Quarries, Portland, Middlesex County, Connecticut, USA
13.9km (8.6 miles) ⓘCase Quarry No. 1, Case Quarries, Portland, Middlesex County, Connecticut, USA
13.9km (8.6 miles) ⓘCase Prospect No. 4, Case Quarries, Portland, Middlesex County, Connecticut, USA
References
Schooner, Richard. (circa 1980s), Untitled manuscript on central Connecticut mineralogy.
 
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