Alaskite

alaskite

[ə′las‚kīt]
(petrology)
A granitic rock composed mainly of quartz and alkali feldspar, with few dark mineral components.

Alaskite

 

an abyssal, granitic rock of magmatic, sometimes metasomatic, origin. It consists of quartz (30–35 percent), orthoclase (30–50 percent), and albite (up to 20 percent). It is distinguished by a complete, or almost complete, absence of dark minerals. The structure of alaskite is crystalline and grainy, less often porphyritic, and its color is oxblood red, rose, white, or light gray. The term derives from the name of the Alaskan Peninsula, where the mineral was first observed. It is associated with rare-metal and rare-earth deposits. In the USSR alaskites are found in Middle Asia, the Caucasus, and the Transbaikal region. Alaskite is used as facing stone.

References in periodicals archive ?
The Omahola project will comprise a processing plant and will treat ore from its Ongolo and MS7 Alaskite deposits and the INCA uraniferous magnetite deposit.
At the completion of the MS7 drill programme, three RC holes were drilled to test anomalous alaskite scree east of the marble footwall to the MS7 deposit.
Ferguson (1946) and Ferguson and Weeks (1950) subdivided the slate series and felsite into an older unit of andesite, chlorite schist, rhyolite, and felsite, intruded by younger granite and alaskite, and overlain by Carboniferous sedimentary rocks of the Horton Group.
Although the type example for this deposit is the Rossing alaskite -
Perth, Australia, July 6, 2011 - (ABN Newswire) - Advanced stage uranium explorer Deep Yellow Limited (ASX:DYL) (PINK:DYLLF) is pleased to announce that its wholly-owned Namibian operating entity, Reptile Uranium Namibia Ltd ('RUN') has made a new alaskite discovery at target MS7, which was recently identified from structural and geological mapping.
However, the alaskite granite contact or "footwall" that is directly below the quartz ore bodies also appears to be mineralized.
News_ID=257819613 hyperurobilinuria alaskite hoodia online http://www2.
Twin Peaks is a high angle quartz vein stockwork of epithermal and secondary origin, developed in faulted and fractured alaskite and quartz monzonite porphyry.
The column leach test, conducted at Gecko Laboratories in Swakopmund, was on a composite of samples collected from seven diamond drill holes located across the Ongolo and MS7 alaskite deposits.
Perth, Australia, June 29, 2011 - (ABN Newswire) - Advanced stage uranium explorer Deep Yellow Limited (ASX:DYL) (PINK:DYLLF) is pleased to announce that chemical assay results have confirmed additional high-grade intercepts from a drilling programme at its Ongolo Alaskite resource area.
Indicator models were created to model the complex alaskite and calc-silicate rock units.
The hole was collared below the Mary Limestone, which hosts most of the gold in the Drinkwater and Mary deposits; however, the hole also intersected varying widths of potentially gold-bearing Alaskite and milky quartz in the granite/granodiorite intrusive, which characterized the past-producing historic Wedge and Oromonte underground gold workings, located on the property.