I 



Fourth Supplement to Dana^s Mineralogy. 113 



Bis^ruTHixK [p. 33, 503, anrl I]. — Tlie Riddarhyttan Lismutbine afforded Dr. F. A. 

 Genth (Am. J. ScL [2], xxiii, 415): 



S Te, and Se trace Bi Cu Fe Actbolite, 



18-19 0-30 17-33 0-39 0-31 293 =09*45 



Deducting 1-12 as clialcopyrite, ^vith the actinolite, the percentage becomes, S 18*65, 

 Te 0-32, Bi 81*03 = (Bi, Te)S=^ 



BiSMUTiTE [p. 4G2], — Analyses of the bismutlte of Brewer's Mine, Chesterfield 

 District, S. Carolina, by Dr. F. A. Genth, Am. J. Sci. [2], xxiii, 426. The results 

 show, like those of Ramnielsberg, that the mineral is an impure liydrous basic car- 

 bonate of bismuth. Bismutite occurs, according to Dr. Genth, in Gaston Co., N. C, 

 along "with native gold, in yellowish-white concretions, pulverulent, but sometimes 

 showing a crystalline structure. 



1^ Bleiniere (Antimony ochre) [p. 142]. — Blelniere has been found, according to H. 



J. Brooke (Phil. Mag. [4], xii, 126), in Cornwall, where it has resulted from the de- 

 I composition of Jamesonite. The composition varies much. Mr. Dick obtained in 



an analysis, Oxyd of lead (tb) 40*73, autimonic acid (gb) 47'36, water (fi) 11-91. 

 Dr. Heddle found, Oxyd of lead 46-68, antimouous acid 42*44, water 1198; nnd 

 from a brown variety, Oxyd of lead 4394, antimonous acid with antimonic ochre 

 46-70, water 6*625, 



Bkookite [p. 123, and 11].^ — Fine crystals of iron-black color occur in the Grieser 

 Valley. D. F. Wiser, Leonh. u. Bronn, 1856, 16S.^Kokschurov figures crystals 

 of Biookite from the Ural in his Min. Russl, ii, 273. 



Breithacptitb [p. 53]. — Stated to occur at the Chatham (Ct.) Mine in Shep. Min., 

 p. 320. 



^i Oalcite [p. 455, 503, and T, II, III]. — Q. Sella gives a table of the crystalline 



forms of calcite in a paper "dell'Argento Rosso," (Accad. Sci. Torino, 1856,) and 

 mentions the following planes not given in the Mineralogy. The rhombohedrons 

 ■ny> 6, (observed in Traversella cryatalf=), Y, 28, -14.— Prisms (omitted in Min.) 



I. 4 4 11 



t§, t*, t2, 1— Scalenohedrons ^ (Andreasberg crystal), ^ (ib.), 1^, 1^ 1*, 1 ^ ^, 



9 7 5 9 UL 



^T _|.if _-|:j -|.t |2 -\^^ :J2 3 (Andreasberg), -i? (Traversella), 

 1 5 (Traversella), - X^ -1 6 1^^ - ^^ - J- A4l*^ — Twin faces 0, - h h -??, -2, 3 2. 



Analyses of limestones in Kentucky by R. Peter, in Rep. Geol. Ky,, 1856, 



Caltptolite [p. 195]. — This species is stated in Shepard's Min., 3d edit,, p. 2SS, 

 to be probably altered zircon. 



^ CANTONITE, Pratt. — Announced as a new species by N. A. Pratt, in this 



Journal, [2], sxii, 449, and xxiii, 409. It has the external characters and composi- 

 tion of covelline, excepting a cubical cleavage, and if a good species, this sulphuret 

 (CuS) is dimorphous. Mr. Pratt obtained in an ajmlysis, Sulphur 33-490, copper 

 66-205, impurities 0-305 = 100. H.=1'5— 2. G.=4-18, 



Dr. Genth (this Jour., xxiii, 417) considers the Cantonite a pseudomorph after the 

 Harrisite, and through this, after galena. His analyses obtained : 



S Se Ag Cu Pb Fe insoluble 



32*765 trace 0-355 65 604 0-107 0*251 0-157 = 99"23d 



Chalcodite [p. 500].— Analysis by J. W. Mallet (Shep. Min.. 3d edit., p. iii); Si 

 39-77, te 40-84, Mn trace, 3tl 8-52, Ca 5-98, Mg 1*97. It 5ol = 10259. Part of the 

 lime is supposed to be carbonate; and probably a small portion of the iron was ses- 

 quioxyd, [Dr. Mallet, in a letter to the writer, states that the results of his analy- 

 sis are doubtful, "and can hardly be depended on for even a probable formula," as 

 he had too little of the mineral for a satisfactory Investigation. — d.] 



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SECOND SERIES, VOL. SXIV, NO. 70. — JULY, 1S57. 



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