Mine detail: Mt. Monadnock Area Sillimanite Deposits

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Location: Cheshire County, New Hampshire, United States, North America
Lat / long: 42.86664, -72.11616
dep_id: 10069796
mrds_id: W007485
Commodity type: nonmetallic
Trace mineral: Kyanite
Operation type: Unknown
Production size: No production occurred
Development status: Occurrence
ore: Sillimanite
orebody_fm: IRREGULAR
alteration: Muscovite
Reporter: Espenshade, Gilbert H.
hrock_unit: Littleton Formation-Sillimanite-Mica-Quartz Schist, Quartzite
hrock_type: Schist
arock_unit: Concord Granite
arock_type: Quartz Monzonite,Gneiss,Granite
References:
  • FOWLER - BILLINGS, K. S., 1944, SILLIMANITE DEPOSITS IN THE MONADNOCK QUADRANGLE: NEW HAMPSHIRE STATE PLAN AND DEVEL. COMM. PT. 8
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