A glossary of mineralogy . Protoxide of iron . 41 42 Protoxide of manganese . 23-25 Fluorine . . .6-00 101-00 BB decrepitates, and finally fuses to abluish-black magnetic glass. Easily soluble in warm sulphuric acid,affording traces of fluorine. Locality. Zwisel, near Bodenmais,(whence the name Zwiselite), in Bavaria,in granite. Zwiselite has been shown by Kenngottto be a variety of Triplite, with which it isidentical in crystalline form, and otherphysical properties, and similar in chemicalcomposition. 420 ZYGADITE. Zygadite, Breithaupt Occurs in thintabular right rhombic prisms, and in twins
A glossary of mineralogy . Protoxide of iron . 41 42 Protoxide of manganese . 23-25 Fluorine . . .6-00 101-00 BB decrepitates, and finally fuses to abluish-black magnetic glass. Easily soluble in warm sulphuric acid,affording traces of fluorine. Locality. Zwisel, near Bodenmais,(whence the name Zwiselite), in Bavaria,in granite. Zwiselite has been shown by Kenngottto be a variety of Triplite, with which it isidentical in crystalline form, and otherphysical properties, and similar in chemicalcomposition. 420 ZYGADITE. Zygadite, Breithaupt Occurs in thintabular right rhombic prisms, and in twinslike Albite. Colour reddish or yellowish-Avhite. Feebly transparent or slightly trans-lucent. Lustre vitreous, inclining to pearlyon the distinct cleavage-planes. H. below 2-511. ZYGADITE. Comp. Silica, alumina, and lithia, with-out water. Locality. Katherina-Neufang Mine, nearZellerfeld, in the Harz, with Quartz andStilbite. Name. From ,v, in pairs, in allusionto the occurrence of the crystals in fines LONDOirPBIJTVED BY SPOTTISTVOODE A KD SQUARE In Grown 8w. Cloth, Price 12s. Qd. MANUAL OF BOTANY AN INTEODUCTION TO THE STUDY OF THE STEUCTUEE, PHYSIOLOGY, ANDCLASSIFICATION OF PLANTS JOHN HUTTON BALFOUE, , Edin., , Sec. , , PROFESSOR OF MEDICINE AND BOTANY AND DEAN OF THE MEDICAL FACULTY IN THE UNIVERSITY OF EDINBURGH, HER ILiJESTYS BOTANIST FOR SCOTLAND, AND REGIUS KEEPER OF THE ROYAL BOTANIC GARDEN. FIFTH EDITION WITH UPWARDS OF NINE HUNDRED ILLUSTRATIONS EDINBUEGHADAM AND CHAELES BLACK 1875 nsrOVElS^BEI?. 1874- &EMEAL LIST OE WORKS PUBLISHED BY Messrs. LONGMANS, GREEN, and CO. PATERNOSTER ROW, ^ Politics^ Historical Memoirs^ &c. JOURNAL of the REIGNS of KING GEORGE IV. and KING WILLIAM IV. By the late Charles C. F. Qeeville, Esq. Clerk of the Councilto those Sovereigns. Edited by Henry Reeve, Registrar of the Privy vols. 8vo. 865. RECOLLECTIONS and SUGGESTIONS of PUBLIC LIFE, 1813- 1873. B
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectmineral, bookyear1861
