American Mineralogist, Volume 64, pages 241-245, 1979 NEW MINERAL NAMESX Mtcunel FLnrscHen,Groncr Y. Csno ANDADoLF Pessr Bartonite*, unnamedNaFeSr(OH) short-wave ultraviolet light bazirite shows moderately strong, pale bluish-whitefluorescence. A. P. G. K. Czamanske,M. A. Lanphere,R. C. Erd, and M. C. Blake, Jr (1978)Age measurementsof potassium-bearingsulfide mirr- {oAr/8eAr erafs by the technique. Earth Planet. Sci. Lett , 40, Boyleite* 107-t10. Kurt Walenta (1978) Boyleite,a new sulfatemineral from Krop- The sulfidesoccur with rasvumite and pyrrhotite in clots (3- back, southern Black Forest (in German). Chemie der Erde, 37, 6cm) of coarse nepheline,phlogopite, and sulfides,in an alkalic 73-79. diatremeintruding Franciscanmelange at Cdyote Peak,northern Analysis of a sample containing gypsum gaveZnO 29.25, MgO California. Bartonite occurs in blackish-brownmasses up to sev- 2.82, SOB39.76, remainder (CaO,HzO) 28.17,sum 100.0070.After eral mm across, intergrown with pyrrhotite. Microprobe analyses deducting ll-6% gypsum, this correspondsto (Zno6aMg6,5)SO.. by GKC (standards:sodalite for Cl, syntheticNi-Fe sulfidefor Ni, 4HrO. The mineral dehydratesin dry rooms to gunningite. Soluble crocidolite for Na, biotite for K and Mg, chalcopyrite for Cu) of rn water. bartonitegave K 9.91, 10.7;Na 0.01,0.18; Fe 50 0, 49.0;Cu 0.52. X-ray powder data (49 lines) are given; the strongest lines are 0.66;Ni 0.15,0.34;S 38.2,37.3;Cl 0.04,1.40; sum 99.33,99.58Vo, 6.8s(8X0rr), 5.46(l0Xll0), 4.47(l0xl20,tI l), 3.39(7X040), correspondingto the formula KrFe,oS,o.The name is for Paul B. 3.20(5Xl Barton, Jr., geologist,U.S. GeologicalSurvey. l2), 2.95(7b)(t40),2 55(SX051,221). These are in good agreementwith No data are given for the unnamed mineral. the data of Pannetieret al., Bull. Soc.Chim.,324- 326(1966), for pureZnSO. .4HrO, who reportedit asmonoclinic, Discussion spacegroup P2'/n,a = 5.95,b = 13.60,c = 796A,d : 90"18', z:4. Again the first publication of a new mineral name is an in- The mineraloccurs as white, earthy, reniform adequate description, omitting all X-ray data. It is to be hoped that or masses.Cleav- this practicewill be discontinued.M,F. agenot observed,fracture uneven. H probablyabout2. Optically biaxial,negative, d = 1.522+0.0002,d = 1.53t (calc),7 : 1.536*0.002,2V - 70.. Bazirite* The mineraloccurs as an alterationproduct of sphaleritein the quarryat Kropback,southern Black Forest, Germany. name B. R. Young, J. R. Hawkes, R. J. Merriman, and M. T. Sayles The is for R. W. Boyle,geologist, Geological Survey of Canada,who (1978) Bazirite, BaZrSirOr, a new mineral from Rockall Island, mentionedthe occurrenceof ZnSOn4H"O at Keno Hill, Yukon Inverness-shire, Scotland. Mineral. Mag., 42, 35-4O (see Am (Can Mineral., 61, 175, 1976). Mineral.,7,209-218, 1962).Boyleite is isotypicwith stark- eyite(leonhardtite), rozenite, ilesite, and aplowite.M. F. Baziriteoccurs with elpidite(NarZrSi6Or6.3HrO) and other late- stage interstitial minerals in the aegirine-riebeckite granite of Brenkite* Rockall Island (57"36'N ; 13"41'W),as colorless,mostly anhedral, grains. "Low" and "high" titanium varieties have the respective G. Hentschel,U. Leufer,and E. Tillmanns(1978) Brenkite, a new mean compositions:SiO, 39.7l,ZrOz 26.38,BaO 33.69,TiOr 0.l7, calcium fluor-carbonatefrom Schellkopf,Eifel (in German). SnO, 0.0670;and SiO. 39.59,ZrOz 26.t2, BaO 34.12,TiO, 0.51, Neues Jahrb. M ineral. M onatsh.,325-329. SnO, 0.1l%o. Low- and high-refractive index types exist, probably Analysisgave Ca 44.3,44.7 F 21.1,21.3, 21.3, 21.6; C 6.6,6.6, due to differencesin Ti content; uniaxial positive, o = 1.6751(3),e ; 6.'1,6.8, correspondingclosely to theory for CaFlCaCOr. The = 1.6850(3)and c,r: 1.6813(3),e : 1.691(deduced). The mineral mineral dissolveswith effervescencein dilute HCl. The infrared clearly has the benitoite structure in the space group P6c2. Cell spectrumis given. dimensions:low R. I. varie|ya: 6.7690(5),c: 10.020(l)A,high Single-crystalstudy showedthe mineral to be orthorhombic, R.l. varietya = 6.7622(5),c: 10.0158(10)A,Z : 2, D (catc): spacegroup Pbcn,a:7.650, = 7.550, = 3.82. Strongest lines in the powder diffraction pattern b c:6.5484, Z 4,G are : = 3.80(r00x10.2),2.800(t00xl 1.2), s.8s(3sx10.0), 3.38(3s)(l 1.0). rn (calc) 3.126,(meas) 3.10+0.04.The strongestX-ray lines (32 given)are 3.276(60X002,021 ), 3.028(80X21 l), 3.006(80X102,t21\, 2.7e4(tm)(ll2), 2.486(70)(202), 2.265(60X3ll), 1.835(80) (2t3,t23), l .790(60X330). +Minerals marked with asterisks were approved before pub- The mineraloccurs as radiatingaggregates of lath-likecrystals lication by the Commissionon New Minerals and Mineral Names upto I mm,showing forms {010}, {ll0}, {102},and {021}, at Brenk, of the International Mineralosical Association. Eifel,Germany. Colorless, streak white, hardness 5. Opticallybi- o003-N4x/ 79 / 0| 02-024I $00. 50 241 NEW MINERAL NAMES axial negative,a = 1.525,8 : 1.590,7 = 1.593,2V : 26-28",X : Cobalt-frohbergite c, Y = a. No distinct cleavage. E. M. Spiridonov, N. F. Sokolova, A. K. Gapeev, and T. N. The name is for the locality. M. F. Chvilova (1978) Cobalt-frohbergite (mattagamite) of the Zhena-Tyube deposit in Kazakhstan (first find in the U.S.S.R.) (in Russian). New Data on the Minerals of the U.S.S.R Chabourneite* (formerly Trudy Mineralog. Muzaya Akad. Nauk SSSR), 26, Pauf Picot and Zdenek Johan (1977)Atlas des Mineraux Metal- I 40- 145. liques. Mem. Bur Rech Geol Minieras,90, l-402 (see p. ll5). Microprobe analysesare given of 23 mineralsof the seriesfroh- Chabourneite,(Tl,Pb),(Sb,As),,S0., triclinic, occurs with real- bergite (FeTer)-mattagamite (Co,Fe)Tez. These are called frohber- gar, pierrotite, routhierite, laffittite, smithite, and stibnite at Jas gite (Co : O-1.0070),cobalt-containing frohbergite (Co = 1.3- Roux, France.Color white. Strongly anisotropic.Reflectances are 36vo), and cobalt-frohbergite(Co : 6.2-8.8, Fe : l3.l-l0.l7o). given at l5 wave lengthsfrom 420to7O0 nm. Max. and min are: Optical and X-ray data are given. Two alternative nomenclatures 420 nm, 40.O,32 l; 580, 35.1, 3O.2:7OO, 30.7, 26.4. M. F. are suggestedfor this ditelluride series("the first is probably more rational" ): I. FrohbergiteFer-o Changbaiite "Coo-0" Mattagamiteor cobalt-frohbergiteFeoT orCoo, o, Detachment No. 8, ComprehensiveGeological Brigadeof Tong- Cobalt-tellurideFeo r-oCoo r-, hua Region and Petrology and Mineralogy Laboratory, Kirin II. FrohbergiteFe, o_rCoo-0, lnstitute of GeologicalScience (1978) Changbaiite (PbNbrO.), a Cobalt-frohbergiteFeo, ouCoo, o " new mineral of lead and niobium from easternKirin, China (in M attagamiteFeo u-o sCoo u-o , Chinese with English abstract). Acta Geol Sinica, I , 54-62. Cobalt-tellurideFeo3 oCooT1 Chemical analysis,after deducrionof AlrOr, SiO, and LOI due Discussion to admixed kaolinite, and microprobe analysis(in parenthesis) Endless confusion has been caused in the past by names such as gave: FeO 077 (0.94), PbO 44.12(41.51), FezOs0.42, TiO,0.89 cobalt-frohbergite, which most readers would take to mean the (0.95), Nb,O5 53.43 (55.62), Ta,Ou 0.37, sum 100.00 (99.02) cobalt analogue of frohbergite, not cobaltoan frohbergite, as it percent. The chemical analysis corresponds to (PboruFeS.*ou) actually is. This name and the proposalto changethe meaningof (Nb, ouFef+o2Taoo,)O" or PbNbrO.. Semi-quantitative spectro- "rTio mattagamite without consulting the original proposers of the name graphicanalysis showed Sb - 0.3, Si 0.1, Ba 02, Ca - 0.1, As or the IMA Commission should be rejected The paper describing 0 05-0.03 and tracesof Al, Mg, Cu and Mn. mattagamite stated that the name was to be applied to the end The mineral is trigonal, R3m, a : 10.499,c : 11.553A,Z : 9. member CoTer. The two names frohbergite and mattagamite, with The X-ray powder diffraction pattern is identical to that of the suitable adjectival modifiers, are sumcient to describe the series. syntheticrhombohedral PbNb,O6.The strongestlines are (48 plus M.F. 7 p-lines given): 3.100(l0Xll3), 3.028(9X030),2.t60(s)(223), l.ele(4xr25), 1.760(6xr43), 1.74s(3)(330), r.621(sx036), I .5 I 3(3X060), I 3s9(3 )(25 3 ), t,294(3)(336),0.985(3X636 ). I nfrared Emeleusite* absorption bands are: 870(m), 676(vs), 517(vs),423(w), 366(s), B. G J Upton, P. G. Hill, O. Johnsenand O. V. Petersen(1978) 330(w, sh:shoulder), 301(m), 279cm-'(w,sh). DTA (l00",zmin) Emeleusite: a new LiNaFerrI silicate from south Greenland showeda strong endothermicbreak at I 100-1200"C(melting). Mineral Mag.. 42. 3l-34. The mineral occurs as small tabular crystals and sometimes as spherules,average 0.2-0.4mm and up to 5mm in size.The crystals Emeleusite (LirNa.Fe!+Si,rOro) occurs as orthorhombic display 3m symmetry and are bounded, in order of decreasing (pseudohexagonal)euhedra within a facies of a peralkaline prominence.by l000tt, l000Tl, 10tTll. tl0TTl, tt0T2l. t0lDl. trachyte dike. Microprobe analysis (Li by flame photometry) gave and {1120}.The mineral is colorless,cream white, pale brown, SiO, 70.75,TiO, 0.55, ZrO"O.l0, Al,Os 1.34,Fe,Os 12.13,MgO yellowish-brown,pale yellowish-greenwith white streak and ada- 0.10, MnO 0 03, NarO I1.98, Li,O 2.78, sum 99.76Vo.Diffraction mantine to pearly luster.