astrophyllite


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astrophyllite

[‚as·trə′fī‚līt]
(mineralogy)
(K,Na)3(Fe,Mn)7Ti2Si8O24(O,OH)7 A mineral composed of a basic silicate of potassium or sodium, iron or manganese, and titanium.
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References in periodicals archive ?
One rock may also have traces of astrophyllite. Some of the rocks contain graphic and myrmekitic intergrowths of quartz and feldspar.
Geology and petrography of the Nagar Parkar igneous complex southeastern Sindh: the Dinsi body
Astrophyllite [(K,Na).sub.3]([Fe.sup.2+]Mn)[Ti.sub.2][Si.sub.8][O.sub.24][(O,OH).sub.7], optically determined by Beydoun and Bichan (1969) and plumbomicrolite Pb[(TaNb).sub.2][O.sub.6](OH) of our new analysis by EMPA (see Edax record Fig.
Contribution to petrology and K/Ar amphibole data for plutonic rocks of the Haggier Mts., Socotra Island, Yemen
magnesium astrophyllite = magnesioastrophyllite: there are many minerals with magnesio- as prefix
Tidying up mineral names: an IMA-CNMNC scheme for suffixes, hyphens and diacritical marks; Mineral names which do not conform to the current nomenclature guidelines of the Commission on New Minerals, Nomenclature and Classification have to be corrected, and in the future a suffix-based nomenclature is to be used for new mineral names
Natrolite in the cavities is overgrown by calcite, fluorite, barytocalcite, podlesnoite, astrophyllite and, in minor amounts, burbankite, lemmleinite-K and fluorapophyllite.
Podlesnoite Ba[Ca.sub.2](C[O.sub.3])[.sub.2][F.sub.2]: a new mineral species from the Kirovskii mine Khibiny, Kola Peninsula, Russia
There were a lot of fine minerals represented, from astrophyllite to zircon, all self-collected and all in fine condition.
Springfield Show 2004
Associated minerals are: natrolite, aegirine, microcline, catapleiite, fluorapatite, titanite, fluorite, galena, sphalerite, strontianite, annite, astrophyllite, lorenzenite, labuntsovite-Mn, kuzmenkoite-Mn, cerite-(Ce), edingtonite, ilmenite and calcite.
Abstracts of new mineral descriptions
The principal rock of the Warsak igneous complex is a medium-grained, gneissic alkaline granite (Kempe, 1973) composed of microcline with minor albite, quartz, aegirine, riebeckite and astrophyllite. The gneissic lineation is imparted by the alignment of riebeckite and aegirine needles and is considered by Ahmad et al.
Zagi Mountain: Northwest Frontier Province Pakistan
Occurrence: At Rasvumchorr, in veinlets cross-cutting natrolite of ristscorrite pegmatite; associated minerals are: microcline, aegirine, annite, astrophyllite, magnetite, fluorapatite, pyrophanite, thomsonite-Ca, etc.
Abstracts of new mineral descriptions
Associated minerals at Nanna are aegirine, astrophyllite, analcime, calcio-ancylite-(Ce), catapleiite, fluorite, galena, gibbsite, leucophanite, microcline, natrolite, nafertisite, orthoclase, polylithionite, sodalite (var.
Abstracts of new mineral descriptions
There were aegirine crystals with oddly clubbed ends; pale pink, blocky ancylite crystals; spiky balls of calcite; very complicated, water-clear crystals of an unknown mineral; tiny, resinous brown crystals of a second mineral showing a hexagonal pyramid termination, and pale brown sprays that were obviously astrophyllite.
Microminerals
Type-III: very fine-grained acicular crystals in sheaf-like aggregates (originally described as "witch's broom astrophyllite").
ABSTRACTS OF NEW MINERAL DESCRIPTIONS
The syenite pegmatites contain calcium catapleiite, titanium-rich lavenite, lorenzenite, cesium-rich astrophyllite, kupletskite, pyrophanite, leucophanite, strontium-apatite, loparite, calcium-rich seidozerite, strontium-rich and zirconium-rich perrierite, brookite, landauite, murataite, polylithionite, brewsterite, chabazite, monazite, ancylite, bertrandite, vlasovite, hambergite.
THE MINERALS OF RUSSIA: 22ND ANNUAL FM-TGMS-MSA MINERALOGICAL SYMPOSIUM

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