Albitite

albitite

[′al·bə‚tīt]
(petrology)
A porphyritic dike rock that is coarse-grained and composed almost wholly of albite; common accessory minerals are muscovite, garnet, apatite, quartz, and opaque oxides.

Albitite

 

a veined crystal-granular mineral consisting mainly of albite, sometimes with an admixture of quartz, muscovite, garnet, and acmite. Albitite can take the form of hydrothermically metasomatic formations linked with alkaline intrusions (in the Khibiny Mountains), with iron-ore formations (in the Ukraine), with gold-ore diorites (in the Ural Mountains and in California), or with ultrabasic rocks (in the Urals).

References in periodicals archive ?
01% igneous rocks including peridotite, dolerite, gabbro, granites albitite.
The lustrous, transparent crystals are floaters, or rest on green diopside or white albitite matrix.
In contrast, the Pinkneys Point granite was described as a more variable unit, containing topaz granite, greisenized granite, albitite, and greisen, and associated with mineralization, including cassiterite, wolframite, scheelite, and a variety of similar lithophile-element minerals (Chatterjee et al.
Subsequent holes will test the Albitite and Arsenopyrite Zones further down plunge to the west.
At present, two drills are in operation, drilling the downward and western projection of the Hydrothermal, Arsenopyrite and Albitite Zones.
No significant gold values were recorded from the pyritic albitite and Caledonia has concluded that the potential for an open-pit operation as previously envisaged is not economically viable.
In summary, drilling results from holes CF96-2 and CF96-3 are encouraging, encountering massive sulphide veins, abundantly disseminated sphalerite and galena at "Sullivan Time", black and brown tourmalinite, bedded fragmental, albitite, cross-cutting fragmental, and intensely disrupted sediments adjacent to and below the Fors massive sulphide Pb-Zn-Ag deposit and outlining an area of at least 1km x 400m.
In summary, drilling results from holes CF96-2 and CF96-3 are encouraging, encountering massive pyrrhotite veins, abundantly disseminated sphalerite and galena at "Sullivan Time", black and brown tourmalinite, bedded fragmental, albitite, cross-cutting fragmental, and intensely disrupted sediments adjacent to and below the Fors massive sulphide Pb-Zn-Ag deposit and outlining an area of at least 1km x 400m.
Let alone the petrographic difficulties of such a malevolent interpretation, such interpretation is easily disproven by the following observation: the Upper Triassic albitites (Barnes and Mattison, 1981 in Kimbrough and Moore, 2003) of San Pablo were not affected by those intrusion and consequent metamorphism.