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Download the Scanned American Mineralogist, Volume74, pages 1399-1404, 1989 NEW MINERAL NAMES* JonN L. Jamnon CANMET, 555 Booth Street,Ottawa, Ontario KIA OGl, Canada EnNsr A. J. Bunxe Instituut voor Aardwetenschappen,Vrije Universiteite, De Boelelaan 1085, l08l HV, Amsterdam, Netherlands Blatteritex 814-940 (average877). In reflectedlight, slightly to mod- eratelybireflectant, nonpleochroic; variation in color (buff G. Raade,M.H. Mladeck, V.K. Din, A.J. Criddle, C.J. weak to Stanley(1988) Blatterite, a new Sb-bearingMn2+-Mn3+ to pale bufl) is due to bireflectance.Anisotropy member of the pinakiolite group, from Nordmark, distinct, with rotation tints in shadesof grayish-brown. Sweden.Neues Jahrb. Mineral. Mon., l2l-136. No twinning. Orange-redinternal reflections.Reflectance data aregiven at intervals of l0 nm from 400 to 700 nm The empirical formula was calculatedfrom an analysis in air and oil. Reflectanceis about 110/oin air. X, Y, and rce of 2.53 mg of hand-picked by emissionspectrometry Z axescorrespond to a, c, and Daxes, with the optic plane fragments.Recalculation to conform with the gen- crystal parallel to (001). The sign ofbireflectance in air changes eral formula of the pinakiolite group yielded a MnO- from positive (400-450 nm) to negative (470-700 nm). MnrO, distribution, confirmed by a wet-chemical analy- The sign of birefringenceis positive from 400 to 520 nm, sis on 960 pg of material.The result is MgO 13.0,FerO, and negative from 520 to 700 nm. Dispersion r < v. 3.48,MnO 35.1,MnrOr 22.2,SbrO3 11.4, B2O3 14.4,to- Color valuesare also given. Calculation of the Gladstone- tal 99.58 wt0/0.The valency state of Sb is extensivelydis- Dale relationshipswith Sb3* and Sb5+in the analysisled cussedtGladstone-Dale calculations indicate that a for- - to a compatibility index ll (Kp/KJl of, respectively, mula with Sb3* is more acceptablethan one with Sb5*. 0.019 and -0.071 ("superior" and "fair"). The empirical formula of blatterite then is (Mn?j,,- The name is for the German collector Dipl.-Ing. Fritz Mgo (Mn3irrSb8ln, Fe;.io, )- nru(B, 0,.O. ) O r. Sin- rno)r, oo, Blatter (1943- ) who first recognizedthe mineral and pro- gle-crystal and powder-diffraction methods revealed an vided the material described.Type material is deposited orthorhombic unit cell, spacegroup Pnnm or Pnn2, wilh at the Mineralogical-GeologicalMuseum of Oslo, and as a : 37.693(6),b : 12.620(2),c : 6.2541(8)A, Z : 32, specimenBM 1986, l12;E.ll68 in the British Museum D"r": 4.35, D-*. : 4.7(0.4)g,/cm3. The strongestX-ray (Natural History). E.A.J.B. diffraction lines (38 listed) are 5.243(45)(420), 2.2720 6(40)(47 0), 2.6207 (3 5)(840), 2. 604 7( l 00X802), 2.s200(30)(9 40), 2. 08 94(40)(1 2.2.2), I .5 6 3 8(3 5X004), and 1.5406(30X472).The mineral is a member of the pinak- Brokenhillite iolite group. Orthorhombic structures in this group are M. Czank (1987) Structure determination and unrEv in- derived from the pinakiolite structure by chemical twin- vestigation of a new pyrosmalite-group mineral. Col- ning. Blatterite has an a dimension of 37.7 A correspond- lected Abstracts, Fourteenth International Congressof Crystallography(Perth, Australia, C-l 55). ing to the structure type 8l8l . , 4s was confirmed by a preliminary nnreu study. Electron-microprobe analysis [data not given] of crys- Blatterite occurs sporadically in piecesof rich manga- tals from Broken Hill, New South Wales, Australia, gave nosite in the Kittelgruvan mine of the Nordmark orefield, a composition of (MnorrFerooMo.lstro o6)[Si6.oor4 88(OH)0.r2]- Viirmland, Sweden. This material, however, has been (OH)7recl2Er based on 6 Si and divalent Mn and Fe. The dumped there from elsewhere;the Brattforsgruvan mine structural refinement suggeststhat the formula is (Mn, in the same orefield is the most probable source.Blatter- Fe)rr[SiroO.o](OH)2eC1,,.The mineral is hexagonal,space ite occurs as lath-shaped crystals, up to 5 mm long, in groupP6rmc, a: 13.481,c : 14.084A. maganositeor calcite; associatedminerals are katoptrite, Discussion.An unapproved name that should not have pyrochroite, rom6ite(?), and hausmannite. Blatterite beenused. J.L.J. prisms are elongateand striated [001] and have flat, dia- mond-shapedcross-sections. The prism form is {ll0}, with interfacial anglesof 37" and I 43". Color black, streak Cetineite* brown, luster metallic to submetallic,brittle, perfect {001} (1987) a new antimony cleavage,imperfect {100} parting,H about 6, VHNlso: C. Sabelli,G. Vezzalini Cetineite, oxide-sulfidemineral from Cetine mine, Tuscany,Italy. Neues Jahrb. Mineral. Mon., 419425. * Beforepublication, minerals marked with an asteriskwere approvedby the commissionon New Minerals Tuftsoforange-redacicularcrystals,elongate[001]and Na-es, InternationalMineralogical Association. ""iMi";;;i up to 15 mm in length and 15 pm in diameter, occur in 0003-o04x/89/ll 12-1399$02.00 1399 1400 NEW MINERAL NAMES slagcavities in the dumps of the Cetine antimony deposit, elongation,a : 2.45,0 : 2.50,y : 2.65,2Vz : 65(3)' 20 km southwest of Siena, Tuscany, Italy. Electron-mi- (589nm),Z n a:25o,X A c:21o, distinctdispersion croprobeanalyses, combined with a crystal-structurestudy, r < v. Crystal-structure study showed the mineral to be gaveKrO 6.66,NarO 3.87,SbrO3 81.06, S 7.15,SiO, 0.67, monoclinic, spacegroup P2t; for material fromZod, a: HrO (by difference)4.16, sum 103.57,less O = S 3.57 19.00(3),b:7.982(9), c:6.938(\ A, B: 95.67(llf, wt0/0,corresponding to (K,.rrNa, 57),'35(SbrO3)3 03(SbS3)o.eo- and the diffractometer powder pattern (Co radiation) has (OH).53.2.64HrObased on 7 Sb atoms and omitting Si. the following strongestlines : 3.29(l 00)(221), 3.I 5(94X600), The simplified formula (with x : 0.5 and K:Na : 1.86: 3.| 4(t 00)(202),2.7 28(48)(42r), 2.002(42X8 2 l ), l .9 9 8 (4 s) 1.64)is (K,Na)r*,(Sb,O3)3(SbS3XOH)".(2.8-x)H,O. Or- (023), I .686(32)(640), and I .683(29)(242).The resultsare ange streak, resinous luster, transparent to translucent, in good agreementwith data for synthetic BirTeoO',. {100} cleavage,VHNro : 127-156, nonfluorescent,op- The new name is for ProfessorS. K. Chekhovich of the tically uniaxial positive, weakly pleochroic from orange Polytechnical Institute of AIma-Ata, KazakchskayaSSR. to slightly orange-brown,refractive indices much greater Type specimensof the mineral are in the Fersman Min- than 1.74. Single-crystalX-ray study indicated hexagonal eralogicalMuseum, Moscow. J.L.J. symmetry, spacegroup P6.; cell dimensions refined from the powder pattern (diffractometer,Co radiation) are a : 14.230(2),c: 5.579(l)L; D"u": 4.21g/cm3 for the em- Chernikovite* pirical forinula and Z : 2. Strongestlines of the powder D. Atencio (1988) Chernikovite, a new mineral name for patternare 12.41(80)(100),4.67(54X120), 4. I l(55X300), (H3O)r(UOr)r(POo)r'6HrOsuperseding "hydrogen au- 3.5 8 l (44Xl 2 l ), 3.4 19(42\1 30), 3. 00q7 4X22 t), 2.9| 6(100) tunite." Mineral. Record. 19. 249-252. (131),and 2.69q61)(410).The infraredspectrum has ab- This note is a compilation of data publishedin 1958, sorptionbands at 3400 and 1630 cm-', possiblyindica- 1971, and 1979 in rather inaccessiblesources on three tive ofstructural water; strong absorptionspresent in the occurrencesof a mineral that had been given the mis- 450-600 cm-'region reflectthe presenceofSb-O bonds. leading name "hydrogen autunite" after synthetic mate- The new name is after the locality. The mineral was rial of the same properties and that now is to be called formed by weathering of rock and slag that were accu- chernikovite. Chemical data are listed for synthetic ma- mulated during mining operationsat the beginningof this terial [Ross,Am. Mineral., 40, 917-919 (1955)]:UO, century.Type specimensare in the Museo di Mineralogia, 65.08,P2O5 16.03, HrO 19.33,total 100.44wto/0, consis- Universitir di Firenze, Italy, and the Smithsonian Insti- tent with the ideal formula (H3O)r(UOr)r(PO4)r.6HrO.Of tution, Washington,D.C. the total water of hydration, 9.28 wto/ois lost at I l0 'C. Discussion.The crystal structure was reported in Am. Only spectrographicdata are available for natural mate- Mineral., 73, 398-404, I 988. J.L.J. rial. X-ray powder-diffraction data can be indexed on a tetragonal unit cell, probable spacegroup P4/nmm, btt possibly also P4/ncc or P4r22. Cell parameters of type Chekhovichite* material of Chernikov ( I 9 58) on the basisof P4/nmm are E.M. Spiridonov, I.V. Petrova,L.A. Demina, V.I. Dol- a: 7.030(6),c : 9.034(8)A,z: l, D^.: 3.258e/cm3. gikh, (1987) G.M. Antonyan VestnikMosk. Univ., Geol., The strongest X-ray diffraction lines (41 listed) are 42(6), 7 l-7 6 (English translation of Russian). 5.5l (90X10l), 4.99(l00Xll0), 3.82(80)(l02), 3.54(100) The mineral occurs in fractures in quartz and chalce- (200),3.26 (r00x20 l ), 2.96 (60) (2r I ), 2.I 6(70) (I 04,2r 3, dony in oxidized ores from former mines at Zod (Ar- 222,311),and 2.09(70)(302).The pattern of chernikovite menia) and atZhana-Tyube and North Aksu (North Ka- has a strongreflection at about 9 A, betweenthe 002 peak zakhstan).Electron-microprobe analysesfor the mineral of autunite and the 001 peak of meta-autunite: when the from the respectivelocalities gave Bi 37.2,35.3,36.6;Pb three minerals occur together, identification is easy.The 0.8,0.3,1.4; Sbtr., l.6,tr.; Fe0.
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