Reference

Tungsten content in the gneissic beds of the Kirovograd Block

Tungsten content in the gneissic beds of the Kirovograd Block.Some chemicals with cas registry numbers like 14913-80-5 are also used. Bryanskii, V. P.; Popovichenko, V. A.; Vadimova, O. N. (Proizvod. Geol. Ob'edin. "Sevukrgeologiya", Kiev, USSR). Geol. Zh. (Russ. Ed.), 43(6), 120-3 (Russian) 1983. CODEN: GEZHA4. ISSN: 0367-4290. DOCUMENT TYPE: Journal CA Section: 53 (Mineralogical and Geological Chemistry) The occurrence of W (scheelitic) is described in the Precambrian gneissic rocks, with WO3 0.1-0.8%, of the Kirovograd Block, Ukrainian Shield. Garnetiferous, garnet-biotite, graphite-biotite, and biotite gneisses are altered by quartz-Mg metasomatism. Colorless scheelite has a conchoidal fracture, with ~d. >4.2 g/cm3 and n >1.78. Scheelite in these diopside gneisses is assocd. with sphene, apatite, zircon, pyrrhotite, magnetite, etc. The title area is potential for the localization of stratiform scheelite-sulfide-skarn formations. .

Juan Jose D'Elhuyar, discoverer of tungsten

Juan Jose D'Elhuyar, discoverer of tungsten. Schufle, Joseph A. (New Mexico Highlands Univ., Las Vegas, NM, USA). CIM Bull., 76(860), 88-91 (English) 1983. CODEN: CIBUBA. ISSN: 0317-0926. 7440-33-7 which is the cas registry number of some chemical is mentioned. DOCUMENT TYPE: Journal CA Section: 20 (History, Education, and Documentation) A biog. sketch is presented of Juan Jose D'Elhuyar, the true discoverer of W, who was frequently overshadowed by his younger brother, Fausto, who came to receive most of the credit for W discovery are described. .