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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Calcite from
Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA


04356310017271972196122.jpg
Calcite, etc.

Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
04533090017373398854806.jpg
Calcite, etc.

Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
09897060017271972306201.jpg
Calcite, etc.

Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
03992460017376961978517.jpg
Calcite, etc.

Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
01218430017369370638515.jpg
Calcite, etc.

Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
04533090017373398854806.jpg
Calcite, etc.

Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
07803580017272013367754.jpg
Calcite, etc.

Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
05831580017373398231563.jpg
Calcite, etc.

Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
04356310017271972196122.jpg
Calcite, etc.

Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
08874570017376961979725.jpg
Calcite, etc.

Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
09897060017271972306201.jpg
Calcite, etc.

Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
03549440017376961984093.jpg
Calcite, etc.

Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
Locality type:Quarry
Classification
Species:Calcite
Formula:CaCO3
Comments:Typically as micro crystals or cleavable masses in pockets in K-rich albite of the inner mineralized zone associated with pyrite and fluorite. Crystals up to 1/2 inch or more.
Habit:tabular hexagonal, isolated or in stacks or as "nail heads"
Colour:white, pale yellow, tan
Quality for species:Poor for species, only of interest for locality collectors. (#)
Abundance at site:Common
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Associated Minerals Based on Photo Data:
Albite20
- var Cleavelandite2
Pyrite9
Quartz6
Bertrandite5
Fluorapatite4
Muscovite3
- var Schernikite2
Fluorite2
Elbaite1
Microcline1
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
Photo GalleryView Gallery (11 photos)
Data Identifiers
Mindat Occurrence Record ID:96188
Long-form Identifier:1:3:96188:0
GUID (UUID V4):0
Nearest other occurrences of Calcite
0.1km (0.1 miles) ⓘSchoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
0.7km (0.5 miles) ⓘCarr Brook Waterfall, Collins Hill, Portland, Middlesex County, Connecticut, USA
4.1km (2.5 miles) ⓘMiddletown lead mines (Middletown Mine), Middletown, Middlesex County, Connecticut, USA
6.8km (4.2 miles) ⓘTollgate Quarry (Tollgate Mine; Bidwell Quarry; China-stone Quarry), Middletown, Middlesex County, Connecticut, USA
9.8km (6.1 miles) ⓘRocky Hill Quarry, Rocky Hill, Hartford County, Connecticut, USA
11.1km (6.9 miles) ⓘInterstate 91 and Interstate 291 interchange, Wethersfield, Hartford County, Connecticut, USA
12.6km (7.8 miles) ⓘState Routes 9 and 372 interchange, Berlin, Hartford County, Connecticut, USA
13.0km (8.1 miles) ⓘGillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
13.8km (8.6 miles) ⓘState Route 9 and State Route 81 Interchange, Higganum, Haddam, Middlesex County, Connecticut, USA
14.0km (8.7 miles) ⓘHawthorne Drive, Berlin, Hartford County, Connecticut, USA
References
Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy.
Ralph Lieser of Pappy’s Beryl Shop, East Hampton
and Howard Pate of Fluorescent House, Branford, Connecticut.
Schooner, Richard (1955) 90 Minerals from 1 Connecticut Hill. Rocks & Minerals, 30 (7-8). 351-358 doi:10.1080/00357529.1955.11767837
Schooner, Richard. (1958): The Mineralogy of the Portland-East Hampton-Middletown-Haddam Area in Connecticut (With a few notes on Glastonbury and Marlborough). Published by Richard Schooner
 
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