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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Chlorite Group from
U.S 40 Roadcut, Catoctin Mountain, Myersville, Frederick County, Maryland, USA


Locality type:Road Cutting
Classification
Species:'Chlorite Group' (not an IMA approved species)
Comments:massive chlorite, main component of greenstone.
Habit:massive
Quality for species:Rock forming mineral/non-crystalline/little interest for collectors.(##)
Abundance at site:Extremely common
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chlorite Group data
Locality Data:Click here to view U.S 40 Roadcut, Catoctin Mountain, Myersville, Frederick County, Maryland, USA
Data Identifiers
Mindat Occurrence Record ID:71103
Long-form Identifier:1:3:71103:6
GUID (UUID V4):0
Nearest other occurrences of Chlorite Group
20.5km (12.7 miles) ⓘNew London Mine (Linganore Mine), New London, Frederick County, Maryland, USA
22.7km (14.1 miles) ⓘFarmers Cooperative Limestone Quarry, New London, Frederick County, Maryland, USA
23.2km (14.4 miles) ⓘLiberty Mine, Libertytown, Frederick County, Maryland, USA
30.5km (18.9 miles) ⓘUnion Bridge Quarry & Cement Plant, Union Bridge, Carroll County, Maryland, USA
31.9km (19.8 miles) ⓘEagle Metallic Mine, Hamiltonban Township, Adams County, Pennsylvania, USA
32.8km (20.4 miles) ⓘHeadlight Mine, Hamiltonban Township, Adams County, Pennsylvania, USA
33.7km (20.9 miles) ⓘVirgin Copper MIne, Hamiltonban Township, Adams County, Pennsylvania, USA
34.5km (21.4 miles) ⓘHeidelberg New Windsor Limestone Quarry, New Windsor, Carroll County, Maryland, USA
34.8km (21.6 miles) ⓘBingham and National Mines, Hamiltonban Township, Adams County, Pennsylvania, USA
35.6km (22.1 miles) ⓘReed Hill Mine, Glatfelter Farm, Hamiltonban Township, Adams County, Pennsylvania, USA
References
Matthew Neuzil
 
and/or  
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