Second Appendix to the Sixth Edition of Dana's System of Mineralogy

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General Books, 2010 - 170 pages
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 Excerpt: ...near Aussig, Bohemia, where it occurs enveloping green crystals of a titaniferous melanite in inclusions in a calcareous marl. Also occurs in limestone inclusions from the basalt of Aubenas in the Vivarais, Ardeche, cf. Lacroix, Les Enclaves des roches yolcaniques, Macon, 1893, p. 149, and Cornu, l. o. p. 265. Named after Professor J. E. Hibsch. Hielmite, see under Uraninite. Hillebrandite. F. E. Wright, Am. J. Sc., 26, 551, 1908. Orthorhombie; radiating fibrous. Cleavage probably after (110). Brittle. H. about 5.5. G. = 2.692. Color pure porcelain white, often with faint tinge of pale green, n about 1 61. Birefringence weak to medium, negative. 2E medium with strong dispersion r p. Comp. Ca2SiO4.H, O; SiO2, 31.74; CaO, 58.81; H2O, 9.45. Anal. by E. T. Allen: SiO2 TiO2 Al2O2 Fe2O, FeO MnO MgO CaO Na20 K2O H2O 32.59 0.02 0.23 0 13 0.01 0.04 57.76 0.03 0.05 9.36-100.24 In HCl separates some silica but otherwise dissolves. Difficultly fusible to colorless glassy bead, giving calcium flame. Found in contact zone between limestone and diorite in Vclardefia mining district, Mexico, associated with gehlenite and spurrite. Named in honor of Dr. V. F. Hillebraud. Hisingerite, Min., p. 702.--From Ritenbeuk or Godhavn district, Greenland, with anal.; Nicolau, Medd. om Gronl., 24, 21," 1901; Min. Gronl., 322. Histrixite. W. F. PettenI, Notes on Minerals Occurring in Tasmania, Proe. Roy. Soc. Tasmania, 18, 1902; Zs. Kr, 42, 393. Occurs in radiating groups of prismatic (orthorhombic) crystals, striated longitudinally and showing indistinct acute terminations: also massive with foliated structure. H. = 2, slightly sectile. Luster metallic. Color and streak steel-gray, when massive shows iridescent tarnish. Analyses on material regarded as pure. S Bi Sb Cu Fe 1. 24.05...

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