 | | Journal (issue) |
| Number 2 December 1997 ISSN 1323-7640 CONTENTS Page Feature Articles: The Coolgardie pegmatite field...South Australian M11se11111 Saddlebackite, Pb2Bi2Te 2 S3, a new mineral species from the Boddington gold...90. Vol 3. No 2, December 1997 'l{ptes from the, 'Editor INDEX The Index to volume 1 & 2 is inserted...rockhounds.com/leregne. BACK ISSUES & REPRINT OF ISSUE No.1. Due to popular demand the first issue of AJM has...issue. There are still copies available of Volume 2 (1&2) and Volume 3 (1), the Special Issue on Broken |
 | | Report (issue) |
| ............................................. 2 2 2 3 3 GEOGRAPHIC FEATURES ................................... Prospects along the Rio Primero and Canada Pinabete............. Cabresto Creek ............Canyon ..................................... Cabresto Lake prospect ............................................................................. 52 LaBelle area ................................................................................... 54 Criterion claim ............................................... |
 | | Journal (article/letter/editorial) |
| progressive fractionation of single injections of pegmatite magmas separated in time and space.The injections...rock, except in one case where a soda-Iithia pegmatite magma was injected along the foot-rvall schist...schist contact of an earlier potash type of pegmatite. There is no evidence to indicate that any of the magmas...solutions. A later sodalithia pegmatite in contact with an earlier potash pegmatite did not replace any visible...amount of residual rvater and other volatiles u,hich no doubt are liberated as highly heated vapors or liquids |
 | | Report (issue) |
| Pegmatite Investigations 1942-45 New England By EUGENE N. CAMERON and OTHERS GEOLOGICAL SURVEY PROFESSIONAL...______________________________________ _ Location of pegmatite districts ___________________ _ Previous work...Acknowledgments ______________________________ _ History of pegmatite mining inN ew England _______ _ Mica mining _...deposits _______________________ _ Geology of the pegmatite districts of Maine __ :. . _____ _ Metamorphic...________________________________ _ Geology of the pegmatite districts of New Hampshire_ Rock units ______ |
 | | Report (volume) |
| _-____________--_--_-__-_-_-_-__---__-_. Layers of weathered pegmatite._____________________________ Distribution of...pocket 15. Cruzeiro mica mine (Minas Gerais), No. 1 pegmatite, Toquinho workingS-___---___-_____-_-_______---_--_---In...zoning in the Borges pegmatite and segregation patches in the Levindo Alferes pegmatite, Minas Gerais___.... Projection and sketch showing relations of pegmatite, aplite, and schist at Serra dos Lourenc. os mica...Gerais-____--______ 21. Irregular contact of pegmatite and schist at lower Urubu mine, near Espera Feliz____________ |
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| with Gamsberg 11 lnselberge, Helmeringhausen 2 AiAiba 3 Rail ay station Garub near Aus Nature...The Central Escarpment- The Nauchas-Gamsberg-Hakos Area West and South of Rehoboth The Central and South-CentralDeposits...the southern Atlantic Ocean, is at first glance by no means a paradise. However, the harsh Namibian environment...vicinity of the wellknown Spitzkuppe.Onceagain in this area excellent outcrops assistin the searchfor topaz...glance • The localities are arranged from North by no means a paradise. However, the to South. harsh |
 | | Report (issue) |
| Pecora, Director Library of Congress catalog-card No. OS 67-295 For sale by the Superintendent of Documents...Pine district-_____ ________________________ Pegmatite. __________________________ Geology Continued...Metamorphism. _ _ _ _ _____________ Economic aspects of pegmatite minerals . 11 12 14 14 14 15 15 16 16 16 19...minerals. ____ Uranium and rare-earth minerals. Pegmatite districts _ ______________ Jefferson-Boone district...Carolina and Tennessee. 2-6. Maps showing location of mica mines and prospects in 2. Jefferson-Boone and |
