 | | Report (issue) | | Powder Pattern: Sakavalana pegmatite, Fianarantsoa province, central Madagascar. 3.271 (100), 2.871 (52)...28 101.54 (1) Sakavalana pegmatite, Fianarantsoa province, central Madagascar; laser ablation ICP mass...rare-element, granitic pegmatite dike. Association: Smoky quartz, K-feldspar (‘amazonite’), albite (‘cleavelandite’)...Distribution: From the Sakavalana pegmatite, Ampandramaika-Malakialina pegmatite district, a few kilometers northwest...Ambatovita village, Fianarantsoa province, central Madagascar. Also reported from Afghanistan and Myanmar. |  | | Journal (article/letter/editorial) | | is concentrated along and adjacent to aplite-pegmatite contacts, as well as along thin discordant mica-rich...clear crystals to 0.4 mm and masses intergrown with albite and other minerals; ferberite-hübnerite (first...January 2015 to black crystals to 1.5 mm on and in albite and quartz; and cassiterite as dark red-brown crystals...blue Cu sulfide, ilmenite, quartz, microcline, albite, siderophyllite, muscovite, and possibly zinnwaldite...future generations. BERYLLIUM MINERALIZATION OF PEGMATITE POCKETS IN THE WAUSAU COMPLEX, MARATHON COUNTY |  | | Journal (issue) | | Bearing Hydrothermal Breccias in the Stedman Mining District, Southeastern California, Ariz. Geological Soc...accompanied by bavenite. Other minerals present include albite, microcline, quartz, zircon, tourmaline, arsenopyrite...Crystals up to 0.4 mm have been observed. 12 Madagascar Orange-brown crystals up to 3mm, associated with...Sakavalana mine, Ambatovita, Ampandramaika-Malakialina Pegmatite Field, Fianarantsoa Province. Norway Occurs...Occurs at several sites in the syenite pegmatite of the Oslo Region: Originally found at the Heia larvikite |  | | 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 | | periods of stability PLANET | 114 San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 om are uncommon...a fracture, producing such forms as aegirine pegmatite. As well, hot hydrothermal fluids often carry...Hardness 9 Microcline Corundum Microcline, Madagascar * 12 x 23 x 3 cm. Quartz, Mount ida, Arkansas...crystallize in the triclinic system are microcline, albite, kyanite and talc. Orthorhombic Monoclinic ay...such as Porcupine and Hemlo districts; Noranda district, Quebec. USA: Mother Lode belt and others in |  | | 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 |  | | Book | | 314–321, 3rd Floor, Plot 3, Splendor Forum, Jasola District Centre, New Delhi – 110025, India 103 Penang Road...Tectosilicates (continuous framework of SiO4 tetrahedra) Albite Anorthite Celsian Chabazite-Na Coesite 31 Cristobalite...Ahrensite Akaganéite Åkermanite Akimotoite Alabandite Albite Albitic jadeite Allabogdanite Allendeite Almandine...a beryl (Be3Al2(SiO3)6) from the Malakialina pegmatite, Madagascar; the crystal is 18 m long and 3.5...twinning is called “albite twinning” or “polysynthetic twinning” and is common in albite and clinoenstatite |
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