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


08974570017272042635968.jpg
Lepidolite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
07127020017272014142585.jpg
Lepidolite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
06486620017363669706980.jpg
Lepidolite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
02402000017272014174652.jpg
Lepidolite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
05671250017407411722582.jpg
Lepidolite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
07127020017272014142585.jpg
Lepidolite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
07622100017362778661972.jpg
Lepidolite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
02402000017272014174652.jpg
Lepidolite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
08974570017272042635968.jpg
Lepidolite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
05032460017272014246534.jpg
Lepidolite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
06486620017363669706980.jpg
Lepidolite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
06019310017272021109610.jpg
Lepidolite, etc.

Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA
Locality type:Quarry
Classification
Species:'Lepidolite' (not an IMA approved species)
Comments:As distinct crystals, up to 10 cm across; as overgrowths on a core of green muscovite and in turn overgrown by parallel schernikite fibers - all cleavable as one unit. As peach-blossom red crystals, often penetrated by elbaite. Fine-grained, granular masses in matrix with smoky quartz, cleavelandite, elbatite, beryl, fluorapatite.
Habit:pseudo-hexagonal crystals, granular
Colour:purple
Quality for species:Excellent - world class for species or very significant. (!!)
Abundance at site:Very common
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Muscovite30
- var Schernikite18
Albite7
- var Cleavelandite6
Quartz5
Cookeite4
Elbaite3
Microcline2
- var Amazonite1
Microlite Group1
Topaz1
Data
Mineral Data:Click here to view Lepidolite 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 (6 photos)
Data Identifiers
Mindat Occurrence Record ID:38358
Long-form Identifier:1:3:38358:7
GUID (UUID V4):0
Nearest other occurrences of Lepidolite
2.8km (1.7 miles) ⓘAnderson No. 1 Mica Mine, East Hampton, Middlesex County, Connecticut, USA
4.4km (2.7 miles) ⓘHewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex County, Connecticut, USA
4.5km (2.8 miles) ⓘHalberg Quarries (Eureka Quarry; Cook Quarry; Gem Stone Quarry), East Hampton, Middlesex County, Connecticut, USA
9.4km (5.8 miles) ⓘTollgate Quarry (Tollgate Mine; Bidwell Quarry; China-stone Quarry), Middletown, Middlesex County, Connecticut, USA
10.1km (6.3 miles) ⓘWhite Rocks Quarry (Consolidated Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA
10.6km (6.6 miles) ⓘRiverside Quarry (Western Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA
13.0km (8.1 miles) ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
13.1km (8.1 miles) ⓘSchoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
15.7km (9.8 miles) ⓘWalden Gem Quarry, Portland, Middlesex County, Connecticut, USA
17.7km (11.0 miles) ⓘSimpson prospect #1, South Glastonbury, Glastonbury, Hartford 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
Schooner, Richard. (1958) THE MINERALOGY OF THE PORTLAND-EAST HAMPTON-MIDDLETOWN-HADDAM AREA IN CONNECTICUT (With a few notes on Glastonbury and Marlborough)
Scovil, Jeffrey A. (1992) Famous Mineral Localities: The Gillette Quarry, Haddam Neck, Connecticut. The Mineralogical Record, 23 (1) 19-80
Weber, Marcelle H., Sullivan, Earle C. (1995) Connecticut Mineral Locality Index. Rocks & Minerals, 70 (6) 396-409 doi:10.1080/00357529.1995.11761569
 
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