• Hogtuvaite Mineral Data

    www.webmineral.com/data/Hogtuvaite.shtml Hogtuvaite Crystallography: Axial Ratios: a:b:c =0.962:1:0.8257 : Cell Dimensions: a = 10.317, b = 10.724, c = 8.855, Z = 2; alpha = 105.77°, beta = 96.21°, gamma ...
  • HOGTUVAITE, A NEW BERVLLIAN MEMBER OF THE AENIGMATITE ...

    rruff-2.geo.arizona.edu/uploads/CM32_439.pdf HOGTUVAITE, A NEW BERVLLIAN MEMBER OF THE AENIGMATITE GROUP FROM NORWAY, WITH NEW X.RAY DATA ON AENIGMATITE RICHARD I. GRAUCH IJ.S. Geol.ogicat Survey,973 Denver Federal Center, Denver, Colora.do 80225' U.S.A. INGVARLINDAHL Norges geolngiskz undersqkelse, Postbol
  • Hogtuvaite Mineral Specimen For Sale

    www.dakotamatrix.com/products/24024/hogtuvaite Hogtuvaite Formula Ca 4 (Fe 2+ 6 Fe 3+ 6)O 4 [Si 8 Be 2 Al 2 O 36] Crystal System Triclinic Luster Subadamantine Color black Class Triclinic - Pinacoidal Hardness 5.5
  • H¿gtuvaite (Ca Na) (Fe2+ Fe3+ Ti) (Si Be Al) O 2 6 20

    www.handbookofmineralogy.com/pdfs/hogtuvaite.pdf H¿gtuvaite (Ca;Na)2(Fe2+;Fe3+;Ti)6(Si;Be;Al)6O20 °c 2001 Mineral Data Publishing, version 1.2 Crystal Data: Triclinic, pseudomonoclinic. Point Group: 1: As prismatic crystals, to 4 cm, with well-developed striations k elongation; rarely in radiating groups.
  • Hogtuvaite, a new beryllian member of the aenigmatite ...

    pubs.er.usgs.gov/publication/70017512 Hogtuvaite is a new beryllian member of the aenigmatite group that was discovered in Nordland County, Norway. It is a metamorphic mineral, hosted by Proterozoic granitic gneisses and mafic pegmatites of metamorphic origin. Compositional variations within and between gneiss-hosted samples of hogtuvaite are minimal; however, pegmatite-hosted samples of hogtuvaite are significantly different ...
  • Hogtuvaite Image - Mineral

    www.webmineral.com/specimens/picshow.php Dark platy crystals of hogtuvaite in matrix. Hogtuva, Mo i Rana, Nordland, Norway.
  • Hogtuvaite Image

    webmin.mindat.org/specimens/picshow.php Dark platy crystals of hogtuvaite in matrix. Hogtuva, Mo i Rana, Nordland, Norway.
  • VECTOR REPRESENTATION F SOME MINERAL COMPOSITIONS IN THE ...

    citeseerx.ist.psu.edu/viewdoc/summary Hogtuvaite is derived by BeSiAl-2 acting on rhtlnite, and welshite by AlSbBe(MgTiSi)_1 acting on hpgtuvaite. Other theoretical end-members can be generated by the vector method; in the aenigmatite group, many are probably unstable with regmd to a mixture of clinopytoxene plus olivine or spinel, especially if they lack Ti or excess A1.
  • VECTOR REPRESENTATION OF SOME MINERAL COMPOSITIONS IN THE ...

    rruff-2.geo.arizona.edu/uploads/CM32_449.pdf VECTOR REPRESENTATION OF SOME MINERAL COMPOSITIONS IN THE AENIGMATITE GROUP, WITH SPECIAL REFERENCE TO HOGTUVAITE DONALD M. BURT Departtnent of Geology, Ari4orn State University, Tempe, Arizona 85287'1404, U.S.A. ABSTRACT Aenigmatite-group compositions conform to the general formulaA 2B6T6O2p, where t8lA cations are Na and Ca, t6J3 -" t"z*,
  • Vector representation of some mineral compositions in the ...

    asu.pure.elsevier.com/.../vector-representation-of-some-mineral-compositions-... Burt, D. (1994). Vector representation of some mineral compositions in the aenigmatite group, with special reference to hogtuvaite. Canadian Mineralogist, 32(2), 449-457.