 | | 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...differentiated, rare-element, granitic pegmatite dike. Association: Smoky quartz, K-feldspar (‘amazonite’), albite...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...to black crystals to 1.5 mm on and in albite and quartz; and cassiterite as dark red-brown crystals and...unidentified bright blue Cu sulfide, ilmenite, quartz, microcline, albite, siderophyllite, muscovite...in western Ontario. Rich specimens of gold in smoky quartz from the O’Brien mine at Cadillac, Quebec, are...especially useful in a museum context. UNUSUAL QUARTZ CRYSTALS FROM THE TIDEWATER QUARRY, GLEN ALLEN |  | | Show/Event (guide) | | Republic of Congo byR. L. Mown 2:00 U n u s u a l quartz crystals form the Tidewater quarry, Glen Allen...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...shown us that filth and detritus in gemstones, quartz, and chalcedony are both scientifically interesting...striations from continuing across sutures. UNUSUAL QUARTZ CRYSTALS FROM T H E TIDEWATER QUARRY, GLEN ALLEN |  | | 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...from the North American West Coast • “Platinum quartz” from Brazil • Some rare faceted gem materials...WINTER 2003 for the mid-infrared range, and a quartz beam splitter for the near-infrared range. A 6¥...WINTER 2003 283 PEZZOTTAITE FROM AMBATOVITA, MADAGASCAR: A NEW GEM MINERAL Brendan M. Laurs, William |  | | Book | | 314–321, 3rd Floor, Plot 3, Splendor Forum, Jasola District Centre, New Delhi – 110025, India 103 Penang Road...minerals, classifying quartz, for example, into white quartz (Quartzum album), colored quartz (Quartzum tinctum)...tinctum), and clear quartz (Quartzum aqueum). Linnaeus was held in high regard by his contemporaries. The...superficial appearance into higher orders [e.g., diamond, quartz, sapphire, and beryl were lumped into the order...Formula Nepheline Opal Orthoclase Plagioclase Quartz (Na,K)AlSiO4 SiO2nH2O KAlSi3O8 (Na,Ca)(Si,Al)3O8 |
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