 | | Journal (issue) | | displays bluish-green / light yellow pleochroism. Field of view 4.25 mm. Plane polarized light. Hte long...ofchromerich jadeite in hte long sein jadeite jade. Field of view 4.26 mm across. Cross polarized light. ...residual crystal in hte long sein jadeite jade. Field of view 4.8 mm across. Plane polarized light. 323...27, 6, 328-334 Gem-quality clinohumite from Tajikistan and the Taymyr region, northern Siberia Dr Ulrich...specimens have come from the Pamir mountains of Tajikistan. A new occurrence has been discovered in the |  | | Book (edition) | | supergroup (Biagioni et al., EJM 25, 85-90, 2013), garnet supergroup (Grew et al., AM 98, 785-811, 2013)...Al;[(OH) 4 IPO;(OH)l(PO4))'4Hi0 (8.D, turquoise group). Triclinic, PT, a,b,c = 7.39, 7.72, ll.34,a,p,y=99°46'...luster vitreous, streak white. Cleav- (8.D, mixite group). Hexagonal, P6/111, a,c = 13.55, age {001} perfect...Czech Rep. Ahrensite Fe2SiO4 (9.A, ringwoodite group). Cubic, FdJm, a= 8.16. d: 2.46(10) - 1.245(8) -...Bi)[CIJ(SO4) 3] (7.B, apatite supergroup, hedyphane group). Hexagonal, P6/m, a,c = 9.63, 6.88, Z = 2. d: 3 |  | | Book (edition) | | authors and a stud) of recent literature in the field of mineralogy. Current encyclopedic books mostly...to the chemical formula, allegiance to a mineral group, symmetry and crystal structure as well as the strongest...chemical formula, structure (crystal system, space group, and unit cell dimensions), and at least some other...site occupancy. The Sb members of the tennantite group (2.G) will serve as a good example: tetrahedrite...registered in this book (e.g. in the amphibole group). For more detailed information see "Dana's System |  | | Journal (issue) | | note on a new occurrence of vanadian grossular garnet from Madagascar A. Mercier1,2, B. Moine2, J. Delorme3...ABSTRACT: A new occurrence of vanadian grossular garnet from Madagascar is described. Its composition is...Gogogogo tsavorite occurrence Vanadian grossular garnet of gemin Madagascar. quality (tsavorite) is known...marbles within the Precambrian granulitic Vohibory Group. The grossular occurs as porphyroblasts, sometimes...which may be partially or totally enclosed in the garnet along its borders. This assemblage is more or less |  | | Book | | columnar crystals of hedenbergite. Around 1960. a group of collectors visited the mine. then temporarily... Orlandi and Vezzoni, 2013 ). A beautiful 8-cm group of ilvaite crystals spotted with tiny crystal!>...ilvaite crystals to 1 cm occur in pockets in pyroxene-garnet skarn zones, and very large, somewhat rough crystals...AFRICA SoumAFRicA N'Chwaning II mine, Kalahari field, Northern Cape [Cape] Province. Although not quite...mcdougallminerals.com, 2015). Wessels mine, Kalahari field, Northern Cape [Cape] Province. Mining began in |
|
