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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Smaragdite from
Knockormal Hill, South Ayrshire, Scotland, UK


Locality type:Hill
Classification
Species:Actinolite var: Smaragdite
Formula:Ca2(Mg,Fe2+,Cr)5Si8O22(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Smaragdite data
Locality Data:Click here to view Knockormal Hill, South Ayrshire, Scotland, UK
Data Identifiers
Mindat Occurrence Record ID:1106342
Long-form Identifier:1:3:1106342:1
GUID (UUID V4):0
References
Stephenson, D., Bevins, R. E., Millward, D., Highton, A. J., Parsons, I., Stone, P., Wadsworth, W. J. (1999) Chapter 2: Early Ordovician volcanic rocks and associated opholitic assemblages of Scotland. In Caledonian Igneous Rocks of Great Britain (Geological Conservation Review Series - Geological Conservation Review No. 17. Joint Nature Conservation Committee, Peterborough. p.27-104.
 
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