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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Crocidolite from
Fallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA


09003500017272013547018.jpg
Crocidolite

Fallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA
06976320017272038209444.jpg
Crocidolite

Fallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA
01940000017366099941329.jpg
Crocidolite, etc.

Fallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA
04487150017272038243280.jpg
Crocidolite

Fallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA
06976320017272038209444.jpg
Crocidolite

Fallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA
01940000017366099941329.jpg
Crocidolite, etc.

Fallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA
09003500017272013547018.jpg
Crocidolite

Fallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA
06976320017272038209444.jpg
Crocidolite

Fallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA
01940000017366099941329.jpg
Crocidolite, etc.

Fallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA
Locality type:Quarry
Classification
Species:Riebeckite Root Name Group var: Crocidolite
Formula:◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Quality for species:Good crystals or rich for species - important (!)
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Aegirine2
Orthoclase1
Quartz1
Data
Mineral Data:Click here to view Crocidolite data
Locality Data:Click here to view Fallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:101969
Long-form Identifier:1:3:101969:8
GUID (UUID V4):0
Nearest other occurrences of Crocidolite
1.0km (0.6 miles) ⓘJ. S. Swingle Quarry (Swingle's Quarry), Quincy, Norfolk County, Massachusetts, USA
1.2km (0.7 miles) ⓘGranite Railway Quarry (Granite Rail Quarry), Quincy, Norfolk County, Massachusetts, USA
44.7km (27.8 miles) ⓘBeacon Pole Hill quarry, Cumberland, Providence County, Rhode Island, USA
51.4km (31.9 miles) ⓘBlackburn Circle locality, Gloucester, Essex County, Massachusetts, USA
References
Rocks & Min.: 19:244
Januzzi, Ron E., Seaman, David M. (1976) Mineral Localities of Connecticut and Southeastern New York State and Pegmatite Minerals of the World. The Mineralogical Press, Danbury, Connecticut, USA.
 
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