 | | Journal (issue) |
| northwestern Pakistan|‘Black’ axinite| Beryl from Tanzania with phenakite inclusions|Clinohumite from Vietnam|Lace...band centred at 715 nm that extended from the red region into the infrared. Energy-dispersive Xray fluorescence...known from Dal’negorsk, Primorskiy Kray, FarEastern Region, Russia, and also from Medel Valley, Grischun,...York, USA, 1872 pp. (see p. 1154). Beryl from Tanzania with Phenakite Inclusions Gemmologists typically...These 14.05 and 11.02 ct samples of beryl from Tanzania contain abundant colourless mineral inclusions |
 | | Book (edition) |
| an inner solid region of diameter 2440 km and density about 8 gcm3, and an outer region about 2260 km...alumina, alkalis and the rarer elements. If the region is quiescent and all the magma solidifies in the...if about half way through crystallization, the region becomes 8 Rocks and the Processes That Formed... More recently, it has been found that where a region is saturated with water, jadeite can form in veins...Geological Sources of Gems In the Merelani region of Tanzania, veins containing tanzanite and tsavorite |
 | | Journal (issue) |
| Usambara Mountains, south of the Umba area in Tanzania, and was introduced by Halvorsen and Jensen (1997a...or red in artificial light in tourmalines from Tanzania, and although their searches for previous examples...1970 Crowningshield reported a rare garnet from Tanzania, which was found to be an isomorphous mixture...(1961) described tourmalines from the Gerevi Hills, Tanzania, which appeared red under a Chelsea colour filter...focus in recent publications on gemstones from this region? UE tourmalines also occur in the John Saul ruby |
 | | Book |
| localities for good ilmenite crystals exist in the region (Brunet, I 977b ). NEW YORK Amity, Orange County...in Switzerland, it is only in the Maderanertal region of east-central Canton Uri that clefts bearing...clefts are found fairly commonly throughout this region, such that only a handful of notable finds during...about 20 other quartz mines are operated in the region of the Subpolar Urals, northwest of Saranpaul,...collected intermittently from pegmatites of the region, associated with crystals of corundum, rutile, |
 | | Journal (article/letter/editorial) |
| Polydymite Polyhalite Porpezite Poudretteite Powellite Prehnite Pretulite Priceite Priderite Proustite...the Alpine region, and (3) Mid-Triassic to early Jurassic extension in the extra-Alpine region. Isotope...make a contribution to the cultural heritage of a region and may successfully be used in exploration (Mascaro...two years. The economic potential of a particular region or mining camp can be deduced from the economic...about 50% of them concentrated in the Steelpoort region of the eastern Bushveld Complex. Stratiform deposits |
| | Journal (article/letter/editorial) |
| Polydymite Polyhalite Porpezite Poudretteite Powellite Prehnite Pretulite Priceite Priderite Proustite...the Alpine region, and (3) Mid-Triassic to early Jurassic extension in the extra-Alpine region. Isotope...make a contribution to the cultural heritage of a region and may successfully be used in exploration (Mascaro...two years. The economic potential of a particular region or mining camp can be deduced from the economic...about 50% of them concentrated in the Steelpoort region of the eastern Bushveld Complex. Stratiform deposits |
 | | Book |
| the same passion for minerals and the NE Bavarian region. The Oberpfalz was his home and my adopted country...the principal techniques of deep geophysics, this region enables us to look at the origin of pegmatites...to find new profitable mineral deposits in the region are not very promising and mining in Germany is...mining was the reason for people to settle in a region but likewise the focal point of geoscientists to...ore deposit (Čech et al. 1971). In the Luc Yen region, Vietnam, the amazonite pertains to a group of |
