American Mineralogist, Volume 78, pages 450-455, 1993 NEW MINERAL NAMESX JorrN L. Jlnrnon CANMET, 555 Booth Street,Ottawa, Ontario KIA OGl, Canada Jacpx Puztnwtcz Institute of Geological Sciences,University of Wroclaw, Cybulskiego 30, 50-205 Wroclaw, Poland Bystrite* Microprobeanalysis gave Mn 10.07,Ca 4.76,Mg5.92, V.G. Ivanov, A.N. Sapozhnikov(1985) Lazuritesof the Fe 11.95,Al 0.8, P 16.18,H,O (by weight loss)20.78 + USSR. Nauka, Novosibirsk, l-172 (in Russian). wto/0,corresponding to (Mn, Ca)MgFe3(POo)r(OH) .4H,O. A.N. Sapozhnikov,V.G. Ivanov, L.F. Piskunova,A.A. The mineral forms platy crystalsup to 0.5-l mm, flat- Kashaev,L.E. Terentieva,E.A. Pobedimskaya(1991) tened[00], sliehtlyelongate [001], showing {001}, { 100}, Bystrite Ca(Na,K),(SiuAl6OroXS3), s. HrO -A new can- {010}, {l I l}, and {21l}. Light yellowishgreen to green- crinite-like mineral. Zapisk:t Vses. Mineral. Obshch., ish yellow, transparent to translucent, vitreous to greasy 120(3),97 -100 (in Russian). luster, white streak with a yellowish tint, brittle, uneven E.A. Pobedimskaya,L.E. Terentieva,A.N. Sapozhnikov, fracture,H : 3.5, imperfect{010} cleavage,D-"^ :2.69, A.A. Kashaev,G.I. Dorokhova (1991) Crystal struc- D""t": 2.70 g/cm3.Optically biaxial negative,a : 1.627, ture of bystrite. Doklady Akad. Nauk SSR,319(4), 873- P:1.642,7: 1.658,2V^"":9p ,X: b, Y: a, Z: c, 878 (in Russian). dispersionr > v; distinctly pleochroic,Z: greenishyel- Microprobe analysiscombined rvith coulometry (HrO) Iow, X and Y almost colorless.Orthorhombic symmetry, and various traditional techniques(total and sulfidic sul- a: 15.05,b:37.37, c:1.18 A, spacegroup Ccca, : fur)gave SiO, 33.37,N,O326.74, CaO 5.10,NarO 14.42, Z 16. Strongest lines of the X-ray pattern are K,O 7.63,S 12.03,SO3 0.50, CO' 0.32,Cl 0.25,H'O 9.3 8 ( r 00,040),5 .00 (7 0,22 r), 3.5 2(7 0,022), 2.8 4(9 0,082), 1.62,O = S: and Cl2.06, sum 99.92wt0/0, corresponding and 2.60(80,420).The mineral occursin a granitic peg- to (Ca, o,Na, ,rK, ,o)r,n, (Siu ,rAls s3)r,r00oro (S3), 3e(SOo). 0r- matite vein in Ilmenskij National Park, Urals, Russia, Cloor(CO3)008.IHrO.Readily soluble in dilute acids, pro- and is associatedwith products of decomposition of tri- ducing HrS. After heating in air at 800 "C becomes dark plite, francolite, ushkovite, matveevite (which see),and green. Single-crystal X-ray structural study (R : 0.078) iron and manganesehydroxides. The name is for min- showed the mineral to have trigonal symmetry, space eralogist A.V. Kalugin. groupP3 lc, a:12.855, c: 10.700A. ttre strongest Discussion.Dataare from the abstractby Kydryashova lines of the powder pattern (49 given) are:4.824(70,102), and Rozhdestvenskaya.The original paper by B.V. Ches- 3.919(80,2rr), 3.720(100,300),3.313(90,2r2), and nokov, V.A. Vilisov, V.O. Polakov, and A.F. Bushma- 2.676(70,004).D-"," : 2.43(l), D.^n: 2.45 g1cm3,H : kin, published in the book Mineraly i mineralnoe syre 5, good {1010} cleavage,weak pinacoidal cleavageor gorno-promyshlennykh rajonov Urala, could not be ob, pinacoidal parting, vitreous luster. Yellow in thin section, tained. The mineral was submitted to the CNMMN in optically uniaxial positive, <,r: 1.584,e : 1.660, pleo- 1983,but the vote was suspendedand the name has not chroic from denseyellow to almost transparent, O > E. been approved. Seealso the abstract for matveevite. J.P. Negative elongation. [The original paper has since been obtained and data The mineral occurs in the Malo-Bystrinskoe lazurite from it are incorporated in the above abstracl-Ed.l deposit, Pribaikal area, Russia, where it forms yellow, tabular crystalsup to 5 mm long, closely intergrown with lazurite, calcite, and diopside; also occurs as irregular Luberoitex grains and aggregates.Type material is at the Fersman J. Jedwab, B. Cervelle, G. Gouet, X. Hubaut, P. Piret MineralogicalMuseum, Moscow, Russia.J.P. (1992) The new platinum selenideluberoite Pt,Seofrom the Lubero region (Kivu Province, Zafte). Eur. J. Min- eral..4. 683-692. Kaluginite Electronmicroprobe analysisgave Pt 75.76, Se 24.24 V.L Kydryashova, I.V. Rozhdestvenskaya(1991) New wto/0,and that of a PtSe.8standard gave Pt 75.54, Se mineralsXLV. Zapiski Vses.Mineral. Obshch.,120(4), 24.46 wto/o,corresponding well to PtrSeo.Occurs as dark 100-l l5 (in Russian). bronze, metallic, idiomorphic crystals, and fragments up to 0.5 mm, and as round to irregular grains in Pt. Some grains prismatic, * Before publication, minerals marked with an asterisk were are polysynthetically twinned; cleavage approved by the Commission on New Minerals and Mineral parallel to {001}, VHN,5 : 461 (322-620), polishing Names, International Mineralogical Association. hardnessnear that of Pt, D-"u, : 10.68-12.78,D""r" : 0003-004x/93/0304-0450$02.00 450 JAMBOR AND PUZIEWICZ: NEW MINERAL NAMES 451 13.02,D^"o, (synthetic) : 13.02g,/cm3. In reflectedlight, mitted to the CNMMN in 1986 and were not approved. white with a greenish yellow hue, weak pleochroism, Possibly related to paulkerrite. J.P. strong bireflectance and anisotropism. Reflectance per- centagesare given in l0-nm steps in air and oil; values for R-,. and R-,. in air and in oil for the four standard Olekminskite* wavelengthsare, respectiv ely, 47 0 48.6,42.6 (38. 3, 32. 5); A.A. Konev, E.I. Vorobev, L.F. Piskunova,Z.F. Ush- 546 53.0,46.7 (42.7, 36.8); 589 55.0,48.6 (44.5, 38.2); chapovskaya,G.A. Tichonova (1991) Olekminskite 650 58.0, 51.5(41 .4, 40.8);in air x : 0.3243,0.3254, y Sr(Sr,Ca,Ba)(CO3)r-Anew mineral and the new iso- : 0.3289,0.3298, Yo/o: 53.48,47.14,)\d:579.1,519.3, morphous series olekminskite-paralstonite. Zapiski P. : 7.23, 7.76. X-ray single-crystalstudy indicated Vses.Mineral. Obshch.,120(3), 89-96 (in Russian). monoclinic symmetry, spacegroup P2,/c, a: 6.584(5), Microprobe analyses(CO, calculated, five crystals an- b: 4.602(3),c: 11.10(l) A,B : ror.e(r),z:2. Stron- alyzed, 17 analysesgiven) gave SrO 49.86, CaO 6.68, gestlines of the powderpattern (l 14.6-mmDebye-Scher- BaOI1.23, La,O.0.21, Ce,O.0.56, CO,29.94, sum 98.48 rer, CuKa radiation) are 5.45(60,002), 3.27(60,112), wt0/0,corresponding to Sr, o,oCaorroBao r,rLao oooCeo o,o- 2.93(80,rr2), 2.78(60,1l3), 2.648(608,210),2.465- (CO.),.Smallamounts of FeO (0.00-0.27),MnO (0.04- (60,113), 1.875(100B, 221,304,302), and 1.812(70,006).0.19), and MgO (0.00-0.02 wto/o)were found. The min- Known as a synthetic compound, for which the crystal eralforms needlelikecrystals, 0.005-0.010 mm thick, oc- structure has been determined. curring in spherulitic aggregates0. l0-0. I 5 mm in radius. The mineral was found in museum-preservedplacer The crystalsare round to hexagonalin crosssection; their concentrates from the Lubero region, Kivu Province, centers are enriched in Ca and Ba, and the rims in Sr. Zaire.The main constituentof the concentratesis native Transparent,brittle, 11: 3, Iustervitreous, D-.u, : 3.70(2), Pt. The new name is for the locality. Type material is in D*rc : 3.650-3.682 g,/cm3.In thin section,transparent, the Institut royal des Sciencesnaturelles de Belgique, straight extinction, uniaxial negative,ot : 1.670(2),e: Brussels.J.L.J. 1.527(2),negative elongation.There exists a range of compositions between the new mineral and paralstonite. Hexagonal symmetry and spacegroup P32l were as- Matveevite sumed by analogywith paralstonite. X-ray powder study gavea: 8.66(2),c: 6.08(2)A; strongestlines (20 given) V.I. Kydryashova, I.V. Rozhdestvenskaya(1991) New and 1.305(70,diffuse). mineralsXLV. Zapiski Vses.Mineral. Obshch.,120(4), are 3.50(100),2.49(90), 2.03(90), 100-l l5 (in Russian). The mineral occurs in barytocalcite-qtarlz veins of 5- 10 cm width that cut intrusive breccias accompanying The averageof two electron microprobe analysesgave the alkaline Kedrovyj massif, Aldan Shield, Siberia, Rus- MgO 3.51,MnO 8.06,P2O529.37, A1rO,4.25, Fe,O. sia, located close to the Murunskij alkaline complex. As- 9.21,TiO,8.54, K,O 2.11,H,O (by difference)34.95, sociatedminerals are calcite, barite, and ankerite that re- sum 100 wt0/0,corresponding to (K,H3O)Ti(Mn,Mg)r- placed barytocalcite.The name is for the city Olekminsk, (Fe3*,Al)r(POo)o(OH),.l5H,O. Isometric or thick platy the administration center of the Murunskij alkaline com- crystalsup to 0. l-0.2 mm are white to almost colorless, plex. The repository for type material was not given. J.P. alsoyellowish,showing {010}, {100}, {lll}. Transparent to translucent, white streak, luster vitreous, pearly on (010).Perfect {010} cleavage,brittle, unevenfracture, ll Padmaite* : 2.5,D^."": 2.32,D.^,.: 2.40 g/cm3.Optically biaxial positive,a : 1.574, B : 1.580,^y : 1.618,2V. ,. : 44', Yu.S. Polekhovskij,A.V. Voloshin, I.P. Tarasova,S.A. X: P, Y: oLZ: ^y.Orthorhombic symmetry, a: 12.42, Nikitin, Ya.A. Pakhomovskij,Yu.P.