 | | Report (issue) | | amethyst source emerged in the Auvergne region in south-central France, approximately corresponding to the...amethyst, 17 cm tall Onyang, Gyeongsangnam-do, South Korea Stuart Wilensky specimen, Jeff Scovil photo...brines Long prismatic, some scepters Onyang, South Korea Nekemte, Ethiopia Brandberg, Namibia Cavities...question: What is unique about the Parana Basin in South America? Earlier studies suggested that circulating...the familiar colorless "rock crystal," yellow "citrine," white "milky" . quartz, and brown-hued "smoky" |  | | Journal (issue) | | American Federation of Mineralogical Societies & South Central Federation of Mineral Societies. All meetings...wide assortment of varietal names, nicknames, and local names have been used to distinguish between these...been coming from the Boekenhouthoek area, Mpumalanga Province, South Africa. Citrine is yellow, but it rarely...appears to be several causes for the coloration of citrine. One is the presence of iron in the form of Fe3+...yellow mimicking citrine. Heat-treated amethyst is frequently passed off as citrine. Citrine localities include |  | | Journal (article/letter/editorial) | | Johannesburg PO Box 524, Auckland Park 2006 Gauteng, South Africa brucec@uj.ac.za All photos by author Figure...photographing some fine mineral specimens from various South African mineral collections. These include private...Namibia and the Kalahari manganese field in South Africa are still producing mineral specimens. The N’Chwaning...Riemvasmaak in the Northern Cape Province of South Africa; Balayer is also mining for fluorite at this...fluorite mine located northeast of Pretoria, South Africa (see Cairncross et al. 2008). In fact, goethite |  | | Book | | talc vug in 1997, is 1.7 cm long (Marty, 2004 ). AFRICA widely in Litchfield County, where good crystals...and pegmatitic environments. In the mid- l 970s, local historian-collector William J. Brunet set out to...Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...which they called the Bentley Lake Road occurrence, south of Bancroft. Sharp, flattened rhombohedral ilmenite...Girardville, itself 40 km northwest of Lac Saint-Jean in south-central Quebec, very large and sharp ilmenite Cl) |  | | Journal (issue) | | Mineralien-Welt 1/ 2012 11 Kurz & Fündig Citrine an. Sie stammen aus einem Neufund in Seren je,...Nordamerika USA.Aus der Buick Mine, Viburnum Trend District, Reynolds Co., Missouri, bot „Magma Minerals"...calcit-Stufen aus der Buick-Mine, Viburnum Trend District, Missouri.1. Breite der Stufe 17,S cm. 2. Breite...Seine Vorliebe für FairbumAchate, den „Gemstones of South-Dakota" kommt in dieser Vitrine von Johann Holzmann...-Granat), Südafrika (Amethyst/Kaktusquarz von Boekenhouthoek bei Marble Hall), Botswana (Achat), Ägypten |  | | Book (edition) | | Outside of the United States, please contact your local representative. ISBN-13: 978-0-47 1-72157-4 Printed...field seasons to Canada, Western Australia, South Africa, and Brazil. He was awarded a = Guggenheim Fellowship...nearby mineral localities in the Black Hills of South Dakota. She received her B.S. degree in earth science...electron behaves as a small magnet with a north and a south pole and can produce a magnetic field while moving...coordinate with The two system with north and south poles (N and S) and an arbitrary point of origin |
|
