| | Report (issue) | Study Area, Montana A cooperative study by the U.S. Geological Survey and the U.S. Bureau of Mines Open-File...Igneous rocks Elkhorn Mountains Volcanics Intrusive rocks related to Elkhorn Mountains T7.-% T / » o T*»...General Relations between magnetic anomalies and mines Magnetic anomalies and strong geochemical anomalies...Introduction Mineral deposits in and near the study area East flank zone Pyritiferous veins Silver-lead-zinc...deposit':?.. Elkhorn-Tizer Basin zone Elkhorn district -»_»_.,H"1 -? r7Q f i-L^ifciL P. d o-i-n DdO-Lll | | | Report (issue) | Salmon-Challis National Forest, Salmon, Idaho U.S. Bureau of Mines, Western Field Operations Center, Spokane, Washington...Interagency Agreement between the U.S. Bureau of Mines, U.S. Geological Survey, and U.S. Forest Service...Federal Regulations and to augment the Bureau of Mines' mineral information as required by the National...study was started during 1993 by the U.S. Bureau of Mines and completed during 1997 under the direction of...of the U.S. Forest Service. The U.S. Bureau of Mines was abolished by an act of Congress in 1996. This | | | Report (Issue volume) | GEOLOGICAL SURVEY OF NEW SOUTH WALES EXPLORATION DATA PACKAGE Quartz-jasper and quartz-sulphide veinlets... Drake. WARWICK-TWEED HEADS 1:250 000 SHEET AREA (New South Wales Portion) VOLUME 2 MINERAL OCCURRENCE...2 – Geology, mines and mineral occurrences of the Rivertree silver field. Map 3 - Mines and mineral occurrences...Boonoo Boonoo area Map 4 - Geology, mines and mineral occurrences of the Boorook area. Map 5 - Geology...Geology, mines and mineral occurrences of the Wilsons Downfall area Map 6 - Geology, mines and mineral occurrences |
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