 | | Journal (article/letter/editorial) | | Depositsof the OligoceneHog Heaven Volcanic Field, Northwestern Montana IAN M. LANGE, Departmentof Geology...Geology,Universityof Montana,Missoula,Montana59812 RICHARD E. ZEHNER, Amax Gold Inc., 350 SouthRock Boulevard...eastdomecomplex.They are numerous,small exceptfor the Hog Heavenmine, and occupyseveralstratigraphicandstructuralsettings...(1932), Pardee(1950), Johnset al. (1963), west of Flathead Lake at the north end of the Little U.S. ...volcaniclasticrocks. The scribedthe Hog Heaven mining district, situated volcanicrockshostthe Hog Heavenminingdistrict |  | | Journal (article/letter/editorial) | | MineralizationAges in Belt Supergroup Rocks, Northwestern Montana and Northern Idaho ROBERTE. ZARTMANAND Jon• S....area of Belt Supergroup rocks in northwestern Montana and northern Idaho. The Precambrian lead is characterized...system,including those of the Coeur d'Alenemining district,and with a secondbelt of mineralizationwhich extendssouthxvard...joins the Osburnfault systemnear ThompsonFalls, Montana, contain the Precambrian type of lead. Depositsadjacent...occurrencesthroughout southern Lincoln and Sanders Counties, Montana,appearto be largely Mesozoicor Cenozoic. Small |  | | Report (issue) | | are from the Belt-Purcell Basin of northwestern Montana (Table 1), northern Idaho (Table 2), northeastern...Colorado-/. Sample locations are shown on plate 1; a mine or prospect is shown only once, even though more...than one sample may have been analyzed from that mine or prospect. The map numbers for sample locations...35.575]. Tables 1-4 are subdivided according to county (except for British Columbia), and, for each analyzed...analyzed occurrence, the tables give the name of the mine or prospect from which the sample was collected |
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