Connecticut · Litchfield County
Past Producer

Grannis Deposit

Litchfield County, Connecticut, United States
CobaltNickel
⌖ Show on mapUSGS source ↗
Commodities
TertiaryCobalt, Nickel
Commodity typeM
Materials
Other materialsApatite, Biotite, Chalcopyrite, Clinohypersthene, Hornblende, Hypersthene, Paragonite, Pentlandite, Plagioclase, Pyrite, Pyrrhotite, Quartz
Economic & production
Development statusPast Producer
Identification
Deposit ID10142905
MRDS IDW000163
Alternate namesMount Prospect
RegionNA
Data scoreB
Coordinates41.73749, -73.27234
References
HOWE, E., 1915, SULPHIDE-BEARING ROCKS FROM LITCHFIELD,CONN., ECONOMIC GEOLOGY, VOLUME 10, PP. 330-347.CAMERON, E. N., 1943, ORIGIN OF SULPHIDES IN THE NICKELDEPOSITS OF MOUNT PROSPECT, CONN.:BULLETIN GEOL. SOC. OF AMERICA, VOL. 54, PP. 651-686.CORNWALL, H. R., 1966, NICKEL DEPOSITS IN NORTH AMERICA,U. S. GEOLOGICAL SURVEY BULLETIN 1223.RICE, W. N. AND GREGORY, H. E., 1906, MANUAL OF THEGEOLOGY OF CONNECTICUT, HARTFORD PRESS.SCHAIRER, J. F., 1931, THE MINERALS OF CONN., STATEGEOLOGICAL AND NATURAL HISTORY SURVEY BULLETIN NO. 51.GATES, R. M. AND BRADLEY, W. C., 1952, THE GEOLOGY OF THENEW PRESTON QUAD., STATE GEOLOGICAL AND NATURAL HISTORYSURVEY OF CONN., MISC. SER. NO. 5.BROEDEL, C.H. AND CORNWALL, H. R., 1954,NICKEL AND COBALT IN NEW ENGLAND AND NEW YORK,NEW ENGLAND-NEW YORK INTER AGENCY COMMITTEE:MINERAL RESOURCES STUDY AND REPORT GROUP, PP. 32-42.DUNN GEOSCIENCE CORP. FILE ITEM: MEMORANDUM, APRIL 29, 1959,JAMES R. DUNN TO ROLAND F. BEERS,SUBJECT: POLISHED SPECIMENS STUDY, MT. PROSPECT, CONN.U.S. BUMINES WAR MINERAL REPT.-CONN. NICKEL PROSPS. 91.3081.