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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Annite from
Magnetite occurrences, Higganum, Haddam, Middlesex County, Connecticut, USA


Locality type:Outcrop
Classification
Species:Annite
Formula:KFe32+(AlSi3O10)(OH)2
Comments:fka biotite
Colour:black
Quality for species:Poor for species, only of interest for locality collectors. (#)
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Annite data
Locality Data:Click here to view Magnetite occurrences, Higganum, Haddam, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:720492
Long-form Identifier:1:3:720492:0
GUID (UUID V4):0
Nearest other occurrences of Annite
0.8km (0.5 miles) ⓘHaddam Volunteer Fire Station, Higganum, Haddam, Middlesex County, Connecticut, USA
1.5km (0.9 miles) ⓘForest Ridge Road, Higganum, Haddam, Middlesex County, Connecticut, USA
2.4km (1.5 miles) ⓘFeldspar quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
3.0km (1.8 miles) ⓘRock Landing Quarry (Capt. Rohrback Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
3.0km (1.8 miles) ⓘHurd State Park quarries, East Hampton, Middlesex County, Connecticut, USA
3.4km (2.1 miles) ⓘAnderson No. 1 Mica Mine, East Hampton, Middlesex County, Connecticut, USA
3.5km (2.2 miles) ⓘAnderson No. 2 Mica Mine, East Hampton, Middlesex County, Connecticut, USA
3.8km (2.4 miles) ⓘGillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
3.9km (2.4 miles) ⓘHalberg Quarries (Eureka Quarry; Cook Quarry; Gem Stone Quarry), East Hampton, Middlesex County, Connecticut, USA
4.3km (2.6 miles) ⓘDripps Road, Middletown, Middlesex County, Connecticut, USA
References
Moritz, Harold (n.d.) Personal Communication.
 
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