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New Mineral Names't A merican M ineralogist, Volume60, pages485489, 1975 NEW MINERAL NAMES'T Mrcnenl Futscnrn. G. Y. Cneo, ANDAKIRo KAro Pt" Pto.,rPdoo.Tee 6, 3tld Pto 16Pdoq6Tes tu Brocenite and 6-Brocenite sponding to roPdoo2Teo ur, respectively,or ideally PtTer. The mineral dissolvesin warm aqua WlNc I-Hsien, WrNc Hsien-Chueh, WlNc Chung- Kuo Chi-Ti, regn. Hou Hung-Chuan (1973)Studies on mineralsof the Kang, lNo The mineral is hexagonal (by analogy to synthetic PtTez) with a 2, 86-92 (in Chinese)' fergusonite group. Ceochimica, = 4.041 and c : 5.220 A (calc). X-ray powder pattern is nearly of synthetic PtTe, and d values are significantly Analysis of brocenite gave CaO 1.26, MnO 0'03' FeO 0.95' identical to that those for moncheite (Am. Mineral' 4t, ll81)' TR,O. 46.88, UO, 0.03, uos 0.07, Tho, 8.01, sio, 0.03, Tio, smaller than the l7 lines are 2.896 l0 101, 2'086 9 102' 1'560t 103' 0.12, NbrO, 42.98, TazOu0.086, HrO- tr., HzO+ not determined, Strongest of isLa24.0,Ce42'7, and 1.0967 114. sum 100.45percent. Distribution of rareearths : Color silver gray, luster metallic. VHN (load not given) 142 Pr7.24, Nd 21.5, Sm 2.69, Eu 0.49, Gd 1.04' Dy 0'36 percent. observed' Bireflectance with fergusonite. Most kg/mm', Sp. gr. > 10. Cleavage not The mineral is monoclinic, isomorphous = bright to grayish white. Reflectance(in oil) 5l'6 (green)' grains are metamict. Strongest X-ray lines (22 given) of material weak, 42.9 (orange), 42.1 (red). Distinctly anisotropic from pale grayish heated at l000oC for one hour are 3.24 10, 3.058 l0' 1.965 l0' l.9lO 8, 1.7068, | 677 8' l'608 8. Cell parameters calculated from powder daraarea : 5.lg,b = 11.34,c : 5.48 A. and0 : 84"57'. The mineral occurs as well formed crystals, frequently ter- minated with bipyramid. Color red to reddish brown, luster vitreous to greasy. SP. gr. : 5.34. No analysis was given for p-brocenite, the non-metamict Hg and Pd, and a telluride of Hg, Ag' and Pd. dquivalent of brocenite. The powder pattern of p-brocenite is The name is for the locality, on which no information is given' similar to that of brocenite with strongest lines 3.21 10, 3.07 l0' very low G.Y.C. I "963t, l.9l I 7, I .708 6, 1.6746, l.6l I 6. B-brocenite has content of radioactive elements. Both brocsnite and f-brocenite occur in a skarn deposit in Discussion China, associatedwith diopside, phlogopite, Ce-apatite, Northern The mineral is evidently a bismuth-free variety of moncheite calcite, and topaz (?). (Am Mineral.4E, 1l8l) and the name chengboliteis unnecessary' M.F. Discussion Ferrihydrite* Brocenite is the cerium analog of fergusonite. The name is ap- V., B. B. Zvvecttl, A. I. Gonssxov' L' P' ER- parently derived from the Chinese name which literally means a Csurunov, F. MrLovA, nNn V. V. Bellssovl (1973) Ferrihydtite' Izuest' brown-cerium-niobium mineral. The name 0-brocenite is unneces- Nauk S.S.S.R. ln3, 23-33 (in Russian)' sary. It is most unfortunate that the type locality is not given. Akad. G.Y.C. The phase previously reported by Towe and Bradley (1967)' If the Levinson rule is followed (Am. Mineral' 5l' 152-158, Jackson and Keller (19?0), and Chukhrov et al (1971) has now 1966), brocenite should be called Beta-fergusonite-(Ce).M.F. been named ferrihydrite. Ten analyses are given, showing con- siderdBlevariation in composition (impurities in part)' The formula is break near l80o Chengbolite 5FezOr.9HrO.Drl curvesshow an endothermic and an exothermic break at 350-400'. The infra-red spectrum SuN Wei-Chun, Lt Chao-Lung, JrN Yao-Wu, CnlNc Ying-Chen, shows bandsdue to molecularwater at about 3450and 1620cm-'; CseNc Wan-Lu, Yunr Wen-Hsi, AND LI Wan Tang (1973) no bands of hydroxyl were noted. The water is lost continuously up Chengbolite-a platinum group mineral in Precambrian to 450". The mineral was synthesized by slow hydrolysis of ferric eclogite. Acta Geol. Sinica, 1,89-93 (in Chinese). salts at pH above 3 and below 9'5. The presenceof iron bacteria greatly increasesthe Yield. Probe analysesgave Pt 39.4, 37.0; Pd 2.2,3.96; Te 66.3, 68.0; X-ray study shows strongest lines 2.50-2'54 (vs) /10' 2'21-2'28 sum 107.9,108.96 percent; and wet microchemicalanalysis gave Pt - (s) tt2,1.96-r.98 (s) 11-1,l'70-1.725 (w s)tt4' 1.47-148 (m to Pd 3.26,Te 58.16,Bi not found, sum 97.28percent, corre- 35.86, vs) 300. Electron diffraction study gives a hexagonal cell with a 5.08, c 9.4 A. The structure has been worked out; it contains * Minerals marked with an asterisk after the name were ap- FeO"-octahedra. ochers to dark brown proved before publication by the Commission on New Minerals The mineral occurs as yellow-brown and Bradley)' and Mineral Names of the International Mineralogical Associa- masses.G 3.96 (synthetic, Towe and hot springs,especially those tlon. The mineral occurs in both cotd 485 486 NEW MINERAL NAMES in which iron bacteria (Galtionelta, Leptolhrix, or Toxothrix) are Color grayish-white.Distinctly anisotropicwith color greenish- present and brownish-grayunder crossednicols. Cleavage {100} excellent. The name is for the composition. M,F. Reflectances(max., min): 480 nm, 33.7,29.8;540nm, 33.2,290; References 600 nm, 329, 28.6:640nm, 32 5,28 I percent. The name is for the Incas,first recordedminers ofAg-Sn oresof CHuxnnov, F. Y ., (197 et al l) Izuest Akad. Nauk SSSR, Ser.Geol. the area Type material is in the Redpath Museum, McGill No l. University, Montreal. M.F. JecxsoN, T. A , nNn W. D. KeLr-sR.(1970) Am J Sci 269, No. 5 Tows, K M., rNo W. F. Bneolry (1967)J. Colloid Inrerface Sci. 24, No. 3. Khademite Prennr BentnND,JEAN-PAUL BrnrHrloN, FAstgNCrsnnoN. eNo MrNoucHen (1973) Graemite* Seonzeors Un nouveau sulfate hydrate d'aluminum: la khademite de Saghand(lran). C. R. S. A Wrr-lrnvs, ANDPHrLLrp MArrER, III (1975)Graemite, a new Acad. Sci. Paris,277D. 1585-1588 Bisbee mineral. Mineral Rec. 6, 32-34. Analysisgave Al,O3 21.6(wet chem SO,35.2,HrO 41.7(Tce Microchemical analysesby M. Duggan gave TeO2 60.9, 61.4, ), on 3.5 mg), sum 98.5 percent, corresponding to AlrOr.2.08 6l .4 av 6l .2; CuO 3 I .0, 3 I 9, 30.0,av. 3 L0; H,O (penfieldmerhod) SOo l0.9 HrO, or AI(SO4)(OH).5HrO. Specrrographic 7.0,9.5, av. 8.2, sum 100.4percent, corresponding to CuTeOr.H,O. analysis showed Fe 0.1, Si 0.05, Na 0.02, Mg 0.01, Ti 0.005, per- Spectrographicanalysis showed a trace of Ag. Microchemicaltests Cu 0.002 cent. The Dre curve on 3.8 mg showeda large endothermic for tellurite were positive, for tellurate, halides, and sulfate effect at 178" (loss of H,O), another smaller one at 678o (loss negative The mineral is insolublein water, easilysoluble in cold of SOr), and a large one at 8030 (loss of remaining SOs).A Tcl dilute acidsor 407oKOH. When heated,it decrepitatesand fuses curve is glven easily to a gray blebly slag. Precessiondata show the mineral to be orthorhombic. soace The mineral occursas crystalsup to 8 mm long showingforms a groupPcab, a ll.l78,b | 3.055,c 10.887(all * 0.004)A, Z = 8.-The {100}, b {010}, c {001}, and d l02tl. Rotation and Weissenberg strongestX-ray lines (63 given) arc 4.247 100 220,4 photographsshow the mineral to be orthorhombic, spacegroup 17911 022, 3.90152 202,2.7305924 /. Crystalsshow the forms (010)and (001) probably Pcmm,a 6.805+ 0.006,b 25.613+ 0.015,c 5.780* 0.006 : (dominant),also (ll0), (lll), and (313). A, Z tO,C calc4.24, meas 4.13 t 0.09.The strongesrX-ray lines The mineral is colorless,no cleavageobserved. (28 given) are 12.8035 020, 6.395l0 U0, 3.434I 06t, 2 8734 012, G 1.925.Optical- 2.5s85 0.t00, 09r,2.343 4 0.10.1 ly biaxial, negative,ns a 1.44(calc), B | .460,I | .497, 2V 6g+1", Z=a, Y:b, dispersionnot given. lt was found at The mineral is blue-green,near jade green. H 3-3 5, brittle. Saghand,lran, associated with copiapite, butlerite, parabutlerite, jarosite, Cleavage {010} good, parting {100}. Not fluorescent.Optically amarantite,and alunogen.The name is for N. Khadem, Director. biaxial,pos., ns (Na) a1.920 + 0.003,pt.960 +0.003..v2.20 +220 Geological Survsy 6; Iran. M.F. + 0.005,2V + 48.5., dispersionnot observed,pleochroic with X yellowish-green,I, and Z blue-green,absorption y > Z = X. The mineral, collectedin 1959from the 1200ft. levelof the Cole Kinoshitalitex shaft, Bisbee, Arizona, occurs replacing teineite crystals embedded M. YosHrr,K. Mesnl, T. KAro, T. WeuNnrr, S. Yur, A. Klro, in malachite. Cuprite is associated A second occurrence is from a eNn K. NlclsHlrue (1973)Kinoshitalite, a new mineral from the prospect in the Dome Rock Mts., Yuma Co., Arizona, where the Noda-Tamagawa mine, Iwate Prefecturc. Chigaku Kenkyu mineral occurs replacingteineite, in cavitiesin samplescontaining (Geosci Mag.),24, l8l-190 (in Japanese). chalcocite,corroded bornite, weissite,brochantite, malachite, and goethite. Chemical analysisby K. Maeda and K Nagashima gave SiO, 24.58,TiOr 0.
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