 | | Journal (issue) | | ................252 llvaite, a New Colorado Occurrence by Henry A. Truebe.............................of similar color. This eventually leads into a complex mathematical concept known among topologists as...from the Dunton Gem mine, Newry, Maine: a second occurrence” (vol. 9, p. 99-101), the entry in the first...thus far recovered (Fig. 6, 7). Such a large occurrence of almost universally twinned calcite is unprecedented...hair-like crystals, etc., as well as its ubiquitous occurrence in most massive sulfide deposits. Good crystals |  | | Journal (issue) | | ........43 by Henry A. Truebe Morphology and Occurrence of Bolivian Cassiterite........................logy, the genesis of twinned crystals, and the occurrence and genesis of crystals of varied and unusual...the island, at the head of Hetta Inlet, a narrow fjord which stretches some 25 km to Cordova Bay. Sixty-five...Maximum width 12 cm. Figure 9. (below) The occurrence of ilvaite in the Jumbo mine. 1 ; 1 ;r: 1 EXPLANATION...those high in iron (andradite). Crude crystals of ilvaite, CaFe2+2Fe+3Si20 8(0H), ranging up to 20 cm in |
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Ilvaite occurrence, Kangerluarsuk Fjord, Ilímaussaq complex, Kujalleq, Greenland