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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. 1899 Excerpt: ... is probably expressed by the formula given above. See Proleetite. Cf. also Lewis, Min. Mag., 11, 137, 1896. A full study of the form and optical characters of crystals of the three members of the group, humite, chondrodite, clinohumite, has been also given by Sjogren, G. For. Forh., 14, 423, 1892; Bull. G. Inst. Upsala, 1, 16-40, 1892. A humite, occurring in serpentine in the Allalin region, Valais, Switzerland, contains no fluorine, having the composition Mg, (MgOH), (SiO4)i, see analyses by Jannasch and Locke, Zs. anorg. Ch., 7, 92, 1894; occurrence described by Schftfer, Min. Mitth., 16, 126, 1895. Huronite, p. 340.--Investigation, chemical and microscopic, showing it to be a basic plagioclase, more or less altered to saussurite. Barlow, Ottawa Naturalist, 9, 25; Jb. Min., 1, 430 ref., 1897. Hydrocaloite. K. Kotmann, B.-H. Ztg., No. 38, 1892; Zs. G. Ges., 44, 155, 1892; Jb. Min.. 1, 260 ref., 1894. A soft white pulpy substance occurring in a limestone cave at Wolmsdorf, Glatz, Silesia. Dried over sulphuric acid, it yields the composition CaCO(OH). or CaCO, .2H,0. When free from water it forms a "Bergmilch," containing needle-like crystals with strong double refraction. The author would regard the "Bergmilch " as a third form of calcium carbonate. Hydrofranklinitk, p. 259.--See Chalcophanite. Hydrogioberttte, p. 305.--A mineral provisionally referred here, but perhaps new, has been noted by Brugnatelli at the amianthus deposits of Val Brutta. In loose aggregates of prismatic (orthorhombic) crystals, biaxial with parallel extinction. G. = 2-013. Analysis: CO, 21-85, MgO 43 32, H,0 34'32 = 99-49. Rend. Ist. Lombardo, 30, 1109, 1897, and Riv. Min. Ital., 18, 44, 1898; also Zs. Kr., 31, 54, 1899. Hydroherderite.--See Ilerderite. Hydrozincite...
