 | | Book | | crystals on large, well-formed grey graphite crystals, field of view 3 cm - Philip Hitge specimen, Bruce Cairncross...Cairncross photo; Title page: Spessartine garnet crystal embedded in muscovite schist matrix, 4.3 cm - Bruce...runs from Madagascar through Tanzania, Kenya, Ethiopia and into the Sudan - has blessed East Africa,...countries are among the finest in the world. The region and its gems are particularly dear to my family...most renowned gemstones from East Africa, this region is also host to some of the world's finest examples |  | | Journal (issue) | | Age Dating of Zircon Inclusions in Sapphire Ethiopia Field Report 2019 Tucson Report Spring 2019 VOLUME...table facets. FIELD REPORTS 72 p. 135 Land of Origins: A Gemological Expedition to Ethiopia Wim Vertriest...opal, and emerald mining and trading areas of Ethiopia. REGULAR FEATURES 29 The Dr. Edward J. Gübelin...in opal • Trapiche-like ruby from the Batakundi mine in Kashmir • Sapphire inclusion with rutile “silk”...nephrite from Washington • Color-change pyrope garnet • Colombian emerald and Mozambican ruby • Colored |  | | Journal (article/letter/editorial) | | preiswerkite is euhedral and associated with Ca– Cr–Al-garnet, clinochlore, titanite, and calcite. Preiswerkite...and consist of mica schist, staurolite schist, garnet–staurolite schist, sillimanite schist, meta-arkose... 2d). Preiswerkite is associated with greenish garnet, lining the cavity and filling AC interstices...the chromite grains or as inclusions in chromite. Garnet is pale green in SC RI thin section and less...preiswerkite crystals in some ED samples. PT The garnet associated with preiswerkite contains single-phase |  | | Book | | 40Ar/39Ar Age of the Gem-Bearing Boqueirão Granitic Pegmatite, Parelhas, Rio Grande do Norte, Brazil Reprinted...Gabriele Lanzafame Gem-Quality Tourmaline from LCT Pegmatite in Adamello Massif, Central Southern Alps, Italy:...Enigmatic Alluvial Sapphires from the Orosmayo Region, Jujuy Province, Northwest Argentina: Insights...economically important gem-bearing Boqueirão granitic pegmatite situated in the Borborema Pegmatitic Province...granitic pegmatite is classified as a member of the Lithium-Caesium-Tantalum (LCT) pegmatite family and |
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