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The Identity of Binnite with Tennantite; and the Chemical Composition of Fahlerz

Published online by Cambridge University Press:  14 March 2018

G. T. Prior  and
L. J. Spencer
G. T. Prior
Affiliation:
Mineral Department of the British Museum
L. J. Spencer
Affiliation:
Mineral Department of the British Museum
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Extract

Few minerals have had a more varied career than the cubic sulpharsenite of copper--the binnite of Des Cloizeaux--which as small brilliant crystals is of rare occurrence in the white saccharoidal dolomite of the Binnenthal in Switzerland.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 12 , Issue 56 , October 1899 , pp. 184 - 213
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1899

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References

page note 1 " Notice sur le sulfo.arséniure de piomb de Mont Saint-Gerhard (Nouvelle espèce minérale)". Annalcs de Chimie et de Physique, 1845, ]iii], XIV, 379-383,

page note 1 Heusser, Pogg. Ann. 1855, XCIV, 334. Des Cloizeaux, Annales des Mines, 1885, [v], VIII, 398. Kenngott, Min. d. Schweiz 1866, 373. Petersen, Ber. Ofcnbacher Ver. f. Naturk. 1866, VII, 131.

page note 2 Char. Min. 1880. p. 42.

page note 3 Sartorius yon Waltershausen, Pogg. Ann. 1855, XCIV, 120.

page note 4 Kenngott's Uehersicht for 1856-7, 1859, p. 174.

page note 5 Chem. News, 1874, XXX, 103. Small amounts of lead and iron were deducted.

page note 1 Heusser (1856), Sartorius yon Waltershausen (1857), Kenngott (1859), Schrauf (1873), Hessenberg (1875), Lewis (1878), Groth (1878).

page note 2 "Deutliche hemiëdrische Binnitkrystalle," Zeits. Kryst. Min. 1893, XXI, 202-207; Ibid. 1897, XXVIII, 545-551.

page note 3 Min. Mag. 1893, X, 220-228.

page note 1 See A. Sehmidt, "Wiederkehr gleieher Fläohenwinkel im regulären Krystall- systeme," Zeits Kryst. Min. 1896, XXV, 477; and Math. és term.-tud. Értesltö, 1895, XIII, 331.

page note 2 The letters used for the forms are those of Dana (system of Min. 1892, 6th Edit.).

page note 1 T=Trechmann; L=Lewis; B =Baumhauer.

page note 1 This is much the same as Baumhauer's Fig. 9, Plate IX, in Zeits. Kryst. Min. 1897, XXYIII.

page note 2 A. Hamberg, Bihang Svenska Vet..Akad. Handl. 1887, XIII (2), No. 4; Abstract in Zeits. Kryst. Mi,. 1889, XV, 84.

page note 1 Min. Mag. 1897, XI, 290.

page note 2 The atomic weights used throughout this paper are those given by F. W. Clarke (Smithsonian Miscell. Collections, 1897, No. 1075).

page note 3 Mean of 27"56 and 27"65, the latter by fusing another portion (0.1972 gram) of the same sample of material with sodium carbonate and potassium nitrate.

page note 1 Quart. Journ. Lit. Sci. & Arts (Roy. Inst.), 1819, VII, 96; and Phillips' Min. 1828, 3rd Edit.

page note 1 Wackernasel (1860) and Banmert (1858).

page note 2 Pogg. Ann. 1886, XXXVIII, 897.

page note 3 Bammelaberg's Handb. J. Min.-Chem. 1860, p. 88. Other analymm of Cornish tennantite are given by B. Phillips (1819), Hemming (Phil. Mag. 1831, X, 157), and veto Bath and Bsumert (Sitz.-ber. niedarh. Ges. Bonn, 1868, XV, p. LXXII).

page note 1 Scharizer, Jahrb. geol. Rejoin. 1890, XL, 483.

page note 2 Neues Jahrb. f. Min. 1870, 455-9.

page note 1 Keungott. "Ueber die Fahlerzformel" Neues jahrb, f. Min. 1881, H, 228-248.

page note 1 The authority for this locality is the Heuland oatalope. Two other specimens of tetrahedrite h, om the Heuland collection, and now in the British Museum, which are exactly similar in appearance and matrix to the specimen now described, are, acemrding to the Heuland catalogue, from Bmgorry, Basses-Pyrénées. The latter occurrence is mentioned by Romé de l' Isle (1778), and is desm.ibed at length by Prof. Laeroix (Min. de France, 1897, II, p. 724). Lacroix only just mentions Museum slmmnens of tetmhedrite as being labelled Fresney d' Oisans

page note 1 C. Klein, Neues Jahrb. f. Min. 1871, 493. A. Sadebeck, Zeits. Deutsch. geol. Ges. 1872, XXIV, 458. G. Seligmann, Zeits. Kryst. Min. 1877, I, 335. G. veto Rath, Zdts. Kryst. Min. 1881, V, 258. P. Groth, Min.-Sammlung, Strassburg 1878, p. 66.

page note 1 This specimen has been for many years in the British Museum collection, and was labelled "Andreasberg. Harz" by the late Mr. T. Davies, but the associations are so unlike those described in the literature of minerals from the Harz (Luedecke, Min. d. Harzes, 1896) that this lcoality must be considered as doubtful. On the other hand, on account of the remarkable agreement in every particular with Sandberger's (Nones Jahrb.f. Min. 1869, pp. 801, 297; Unttrsueh. über Erzpiinge, 1885, II, pp. 288, 288) description of tetrahedrite from the Wenzel Mine near Wolfaeh in Baden, we have ventured to suggest that the specimen in all probability came from this locality

page note 1 Beiträge, 1807, IV, 71.

page note 1 Compare Penfield, Amer. Journ. Sci. 1896, II, 8; Abstract Min. Mag. XI. 225. Ibid. 1899, VII, 128; Abstract this No. p. 217.

page note 2 Hamburg, Geol. För. Förh. 1890, XII, 598; Pcnfield and Foote, Amer. Journ. Sci. 1897, L, 110.

page note 3 Two out of Rose's seven analyses are not included, as they show intermixed matrix, and large percentages of both arsenic and antimony, the separation of which was by an imperfect method.