Chalcocite from
Hunting Hill quarry (Rockville Crushed Stone Quarry; Travilah Quarry; Rockville Quarry; Bardon Stone Quarry; Aggregate Industries Quarry), Rockville, Montgomery Co., Maryland, USA

Description
Comments:	ACTINOLITE. ALBITE. (Reported by J. Griesbach, 1975). ANTHOPHYLLITE. Creamy gray veinlets in serpentinite float. ANTIGORITE. (G. T. Faust, 1967). Constitutes bulk of serpentinite as interlocking microscopic laths and plates or as tough, brittle, dark
Quality of samples:	not specified / average specimens
Confirmation
Validity:	Believed Valid
References
References:	Jack Nelson, Compiler from two references and personal communications, May 2000 (See descriptive notes for quarry for reference citations)>
Data
Mineral Data:	Click here to view Chalcocite data
Locality Data:	Click here to view Hunting Hill quarry (Rockville Crushed Stone Quarry; Travilah Quarry; Rockville Quarry; Bardon Stone Quarry; Aggregate Industries Quarry), Rockville, Montgomery Co., Maryland, USA

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