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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Prehnite from
Cheapside Quarry (East Deerfield Quarry; Trew Corp. Quarry), Deerfield, Franklin County, Massachusetts, USA


01113570017362599099790.jpg
Prehnite, etc.

Cheapside Quarry, Deerfield, Franklin County, Massachusetts, USA
06204210017362599098490.jpg
Prehnite, etc.

Cheapside Quarry, Deerfield, Franklin County, Massachusetts, USA
03052360017272045068757.jpg
Prehnite, etc.

Cheapside Quarry, Deerfield, Franklin County, Massachusetts, USA
01229270017272051482932.jpg
Prehnite, etc.

Cheapside Quarry, Deerfield, Franklin County, Massachusetts, USA
03052360017272045068757.jpg
Prehnite, etc.

Cheapside Quarry, Deerfield, Franklin County, Massachusetts, USA
08404830017272045055304.jpg
Prehnite, etc.

Cheapside Quarry, Deerfield, Franklin County, Massachusetts, USA
Locality type:Quarry
Classification
Species:Prehnite
Formula:Ca2Al2Si3O10(OH)2
Habit:hemispherical aggregates of tabular crystals
Colour:pale green
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Babingtonite19
Calcite4
Epidote3
Natrolite1
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view Cheapside Quarry (East Deerfield Quarry; Trew Corp. Quarry), Deerfield, Franklin County, Massachusetts, USA
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:129593
Long-form Identifier:1:3:129593:1
GUID (UUID V4):0
Nearest other occurrences of Prehnite
16.8km (10.5 miles) ⓘLane Quarry, Northfield, Franklin County, Massachusetts, USA
22.5km (14.0 miles) ⓘPelham Granite quarry (Ward Quarry; Valley Quarry), Pelham, Hampshire County, Massachusetts, USA
23.2km (14.4 miles) ⓘVernon, Windham County, Vermont, USA
29.6km (18.4 miles) ⓘNotch Quarry (Lane Quarry; Amherst Quarry; Round Mountain Quarry), Amherst, Hampshire County, Massachusetts, USA
34.9km (21.7 miles) ⓘMount Tom Quarry, Mount Tom, Holyoke, Hampden County, Massachusetts, USA
40.4km (25.1 miles) ⓘQuabbin Aqueduct shaft No. 10 locality, Hardwick, Worcester County, Massachusetts, USA
49.0km (30.4 miles) ⓘHampden quarry, West Springfield, Hampden County, Massachusetts, USA
49.0km (30.4 miles) ⓘUS highway 5 road cut, Putney, Windham County, Vermont, USA
50.2km (31.2 miles) ⓘLane & Son traprock quarries (Lane's Quarry), Westfield, Hampden County, Massachusetts, USA
53.8km (33.4 miles) ⓘMonson quarries (Flynt quarries), Monson, Hampden County, Massachusetts, USA
References
Harvard Museum of Natural History, no.119140
Emerson, B. K (1882) The Deerfield Dyke and its minerals. American Journal of Science 3rd series XXIV:270-278,349-359.
 
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