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


Locality type:Quarry
Classification
Species:'Gummite' (not an IMA approved species)
Comments:According to Schooner (circa 1980s) analyzed by Clifford Frondel at Harvard and found to be mix of fourmarierite and vandendriesschite.
Colour:orange, yellow, red
Abundance at site:Rare
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gummite 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:657269
Long-form Identifier:1:3:657269:3
GUID (UUID V4):0
Nearest other occurrences of Gummite
11.1km (6.9 miles) ⓘSchoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
71.1km (44.2 miles) ⓘBiermann Quarries (Bethel quarries; Codfish Hill Quarry), Bethel, Fairfield County, Connecticut, USA
77.6km (48.2 miles) ⓘRoebling Quarry, Upper Merryall, New Milford, Litchfield County, Connecticut, USA
81.0km (50.3 miles) ⓘFillow Quarry, Branchville, Redding, Fairfield County, Connecticut, USA
82.3km (51.2 miles) ⓘBlandford mica mines, Blandford, Hampden County, Massachusetts, USA
94.8km (58.9 miles) ⓘPelham asbestos mine, Pelham, Hampshire County, Massachusetts, USA
99.4km (61.8 miles) ⓘConsolidated Feldspar Mining Corporation's plant, Bedford, Westchester County, New York, USA
99.5km (61.8 miles) ⓘBedford, Westchester County, New York, USA
References
Schooner, Richard. (circa 1980s), Untitled manuscript on central Connecticut mineralogy.
Ingerson, Earl (1938) Uraninite and associated minerals from Haddam Neck, Connecticut. American Mineralogist, 23 (4) 269-276
 
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