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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Actinolite from
Wiant's Quarry (Weiant Quarry), Pilot, Cecil County, Maryland, USA


Locality type:Quarry
Classification
Species:Actinolite
Formula:◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Actinolite data
Locality Data:Click here to view Wiant's Quarry (Weiant Quarry), Pilot, Cecil County, Maryland, USA
Data Identifiers
Mindat Occurrence Record ID:821920
Long-form Identifier:1:3:821920:6
GUID (UUID V4):0
Nearest other occurrences of Actinolite
12.9km (8.0 miles) ⓘMaryland Green Marble Corporation Quarry (Cardiff Serpentine Quarry), Cardiff, Harford County, Maryland, USA
13.9km (8.6 miles) ⓘSylmar, West Nottingham Township, Chester County, Pennsylvania, USA
29.1km (18.1 miles) ⓘGap Mine, Bart Township, Lancaster County, Pennsylvania, USA
37.9km (23.6 miles) ⓘIron Hill Mine (Chestnut Hill Mine), Newark, New Castle County, Delaware, USA
54.3km (33.7 miles) ⓘDiscovery workings (Main workings), Bare Hills, Baltimore County, Maryland, USA
55.0km (34.2 miles) ⓘBare Hills Copper Mine (Smith Avenue Copper Mine), Bare Hills, Baltimore County, Maryland, USA
55.2km (34.3 miles) ⓘOsborne Hill, Birmingham Township, Chester County, Pennsylvania, USA
55.6km (34.5 miles) ⓘKeystone Trap Rock Quarry, Cornog, Wallace Township, Chester County, Pennsylvania, USA
56.1km (34.9 miles) ⓘSilver Hill Quarry, Bowmansville, Brecknock Township, Lancaster County, Pennsylvania, USA
57.8km (35.9 miles) ⓘGrace Mine, Morgantown, Berks County, Pennsylvania, USA
References
Shannon, Earl V. (1927) Apatite crystals from Wiant's Quarry, near Pilot, Maryland. American Mineralogist, 12 (11) 408-410
 
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