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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Fluorapatite from
Gillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA


00109430017660362625265.jpg
Fluorapatite

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
02788900017374082266161.jpg
Fluorapatite

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
05389100017272013362686.jpg
Fluorapatite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
04895230017374087887618.jpg
Fluorapatite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
05389460017384686672035.jpg
Fluorapatite

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
02788900017374082266161.jpg
Fluorapatite

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
05389100017272013362686.jpg
Fluorapatite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
04895230017374087887618.jpg
Fluorapatite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
02124610017384797343318.jpg
Fluorapatite

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
00811810017376141569093.jpg
Fluorapatite

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
05389100017272013362686.jpg
Fluorapatite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
08698560017660362628114.jpg
Fluorapatite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
Locality type:Quarry
Classification
Species:Fluorapatite
Formula:Ca5(PO4)3F
Comments:Gray-green opaque crystals up to 2 cm common in quartz, albite, beryl, elbaite, lepidolite matrix. Translucent to clear crystals in pockets, either as stout hexagonal prisms or with a central fluorescent prism surrounded by tapered, non-fluorescent overgrowths up to a few cm across. Gray-green crystals show more forms than the rose pink to purple crystals.
Habit:short hexagonal prisms or tabular, terminated by pinacoids with modified edges
Colour:pale gray-green or rose pink to purple
Luminescent properties:bright yellow
Quality for species:Good crystals or rich for species - important (!)
Abundance at site:Common
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Associated Minerals Based on Photo Data:
Quartz18
- var Smoky Quartz3
Albite18
- var Cleavelandite7
Muscovite18
- var Schernikite9
Elbaite17
Beryl13
Fluorite6
- var Chlorophane6
Cookeite6
Microcline5
Columbite-(Fe)5
Schorl2
Microlite Group2
Cassiterite1
Data
Mineral Data:Click here to view Fluorapatite data
Locality Data:Click here to view Gillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
Photo GalleryView Gallery (9 photos)
Data Identifiers
Mindat Occurrence Record ID:36945
Long-form Identifier:1:3:36945:3
GUID (UUID V4):0
Nearest other occurrences of Fluorapatite
0.6km (0.4 miles) ⓘQuarry Hill (Brainerd Quarries; Shailor Quarries), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
2.0km (1.2 miles) ⓘRock Landing Quarry (Capt. Rohrback Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA
2.4km (1.5 miles) ⓘJail Hill Road locality (Jail Hill Quarry), Haddam, Middlesex County, Connecticut, USA
2.7km (1.7 miles) ⓘAnderson No. 2 Mica Mine, East Hampton, Middlesex County, Connecticut, USA
2.8km (1.7 miles) ⓘAnderson No. 1 Mica Mine, East Hampton, Middlesex County, Connecticut, USA
3.2km (2.0 miles) ⓘEnegren Mica Mine, East Hampton, Middlesex County, Connecticut, USA
3.3km (2.0 miles) ⓘGulf Quarry, Haddam, Middlesex County, Connecticut, USA
3.6km (2.3 miles) ⓘLong Hill Quarry, Haddam, Middlesex County, Connecticut, USA
3.8km (2.4 miles) ⓘNemo's Quarry, Haddam, Middlesex County, Connecticut, USA
3.9km (2.4 miles) ⓘCivilian Conservation Corps prospect (CCC prospect; Cook columbite prospect), Haddam, Middlesex County, Connecticut, USA
References
Bowman, H. L. (1902) On an occurrence of Minerals at Haddam Neck, Connecticut, U.S.A. Mineralogical Magazine and Journal of the Mineralogical Society, 13 (60). 97-121 doi:10.1180/minmag.1902.13.60.02
Cameron, Eugene N., Larrabee, David M., McNair, Andrew H., Page, James J., Stewart, Glen W., Shainin, Vincent E. (1954) Pegmatite Investigations, 1942-45, in New England. Geological Survey Professional Paper 255. US Geological Survey doi:10.3133/pp255
Scovil, Jeffrey A. (1992) Famous Mineral Localities: The Gillette Quarry, Haddam Neck, Connecticut. The Mineralogical Record, 23 (1) 19-80
 
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