 | | Journal (article/letter/editorial) | | is concentrated along and adjacent to aplite-pegmatite contacts, as well as along thin discordant mica-rich...them tungstenian columbite-tantalite. Hafnium-rich zircon is locally abundant. Xenotime is sparse and appears...future generations. BERYLLIUM MINERALIZATION OF PEGMATITE POCKETS IN THE WAUSAU COMPLEX, MARATHON COUNTY...abundant muscovite, were observed in only one pegmatite. Beryllium mineralization in these miarolitic...pegmatites occurred during the late stages of pegmatite formation. Primary phenakite appears to have formed |  | | Journal (issue) | | Bearing Hydrothermal Breccias in the Stedman Mining District, Southeastern California, Ariz. Geological Soc...(magnesiohornblendes?), stout apatites, and ilmenite crystals. Zircon ZrSiO4 – Very tiny (less than 0.2 mm), pink, tetragonal... IX, No. 9, pages 5-6. 7 Titanite Apatite Zircon Figure 1 – All from Ford (1932) Magnesiohornblende...minerals present include albite, microcline, quartz, zircon, tourmaline, arsenopyrite, bisbuthinite, gahnite...Crystals up to 0.4 mm have been observed. 12 Madagascar Orange-brown crystals up to 3mm, associated with |  | | Journal (issue) | | pg. 269 284 Pezzottaite from Ambatovita, Madagascar: A New Gem Mineral Brendan M. Laurs, William...Gem-quality corundum from Colombia • Emeralds from Madagascar with strong blue/green dichroism • Peruvian blue...WINTER 2003 283 PEZZOTTAITE FROM AMBATOVITA, MADAGASCAR: A NEW GEM MINERAL Brendan M. Laurs, William...November 2002 in a granitic pegmatite near Ambatovita in central Madagascar. Only a few dozen kilograms...gem shows, cesium-rich “beryl” from Ambatovita, Madagascar, created excitement among gem collectors and |  | | Show/Event (guide) | | Francis 2:45 B e r y l l i u m mineralization of pegmatite pockets in the Wausau Complex, Marathon County...Lupulescu 4:30 M i n e r a l s of the Sakavalana pegmatite, near Ambatovita, Central MadagascarbyWm. B. Simmons...abundant muscovite, were observed in only one pegmatite. 9 Beryllium mineralization in these miarolitic...pegmatites occurred during the late tages o f pegmatite formation. Primary phenakite appears to have formed...quarrying has intersected several small aplite-pegmatite dikes ranging in thickness from approximately |  | | Book | | 314–321, 3rd Floor, Plot 3, Splendor Forum, Jasola District Centre, New Delhi – 110025, India 103 Penang Road...Tetragonal majorite Titanite Tranquillityite Wadalite Zircon Peridot; Chrysolite (Mg,Fe)3Si2O7 (Fe,Mg,Ti,...Yagiite Zagamiite Zaratite Zeolite group Zhanghengite Zircon Zirconium carbide (not approved) Zirconolite Zirkelite...a beryl (Be3Al2(SiO3)6) from the Malakialina pegmatite, Madagascar; the crystal is 18 m long and 3.5...planes; minerals with “poor cleavage” (e.g., apatite, zircon) break along surfaces that are difficult to recognize |
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