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Dunlap's Quarry, West Nottingham Township, State Line Chromite District, Chester Co., Pennsylvania, USA

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Detailed Mineral List:
Amphibole Supergroup
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: Mineralogy of Pennsylvania-1922; Samuel S. Gordon, pg. 181
Formula: ☐{Mg2}{Mg5}(Si8O22)(OH)2
Reference: Mineralogy of Pennsylvania-1922; Samuel S. Gordon, pg. 181

2 entries listed. 2 valid minerals.


Gordon, Samuel S. (1922), Mineralogy of Pennsylvania: 181.

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