কালো টুম্যালিন্

schorl's Usage Examples:

Commonly encountered species and varieties: Schorl species: Brownish black to black—schorl, Dravite species: from the Drave district of Carinthia.

Elbaite forms three series, with dravite, with fluor-liddicoatite, and with schorl.

formation is predominantly Precambrian granite with outcroppings of quartz and schorl.

Associated minerals include quartz, potassium feldspar, muscovite, schorl, riebeckite and magnesite.

It is the calcium and oxygen-analogue of schorl.

This is a schorl tourmaline-rich sample from the Erongo Granite.

P3121, P3212, P3221 R32 156–161 Ditrigonal pyramidal 3m C3v *33 [3] polar schorl, cerite, tourmaline, alunite, lithium tantalate P3m1, P31m, P3c1, P31c R3m.

galena, steatite, hematite, sand suitable for making glass, graphite, schorl, and iron pyrite.

and zircon, as well as various garnets, tourmalines, (dravite, elbaite, schorl) and wolframites.

"Fluor-schorl".

emerald, topaz, amethyst, scheelite, and quartz Image shows aquamarine with schorl from Braldu valley.

replaced by quartz and white mica (in greisen) or quartz and tourmaline (in schorl rocks); in the other case scapolite is the principal new product.

the margins of tourmaline granites; they are black with small needles of schorl that under the microscope are dark brown and richly pleochroic.

well developed garnets (grain size 2 millimeters), millimetric tourmaline (schorl) and asparagus-coloured apatite reaching 5 millimeters in size.

0 [257] [no] [no] (IUPAC: dilead diantimony heptaoxide) Oxy-schorl (tourmaline: IMA2011-011) 9.

schorl's Meaning':

black tourmaline