aplite

(redirected from aplitic)
Also found in: Dictionary, Thesaurus.

aplite

[′a‚plīt]
(petrology)
Fine-grained granitic dike rock made up of light-colored mineral constituents, mostly quartz and feldspar; used to manufacture glass and enamel.
References in periodicals archive ?
Deformation of pegmatitic and aplitic dykes and associated auriferous quartz veins located along the northwestern margin of the undeformed, circular, Magaguadavic Granite is focused along reactivated shear fault splays of the Sawyer Brook Fault (Thorne et al.
Aplitic dikes occur in the boundaries of the stock as gray-pink fine-grained aplites and are composed primarily by quartz (61%) and alkali feldspar (24%) with minor plagioclase (14%).
Associated with the granite are a local aplitic phase, porphyritic felsic dykes, and dykes and plugs of fine- to medium-grained, pyroxene-amphibole diabase and gabbro.
The larger granite intrusions are accompanied and followed by younger granitic aplitic mafic and rhyolitic dykes.
The basement here is intruded by the two varieties of the granitic rocks as well as (porphyritic) microgranite and aplitic dykes and veins.
The potassium granites from the stocks typically comprise pink, medium- to coarse-grained, microcline-megacrystic, massive, partly trachytoid syeno- and monzogranitic rocks, which are locally cut by aplitic and microsyenitic dykes (Kuuspalu 1975; Kirs 1986; Soesoo & Niin 1992).
The biotite granites of the Ereda stock and the aplitic granite veins from the Neeme stock are more differentiated (Petersell & Kirs 1992).
1 and 2) is composed of fine-grained equigranular granite (GRI), aplitic to porphyritic granite (GRII), and fine- to medium-grained equigranular granite (GRIII), although locally porphyritic and pegmatitc varieties of GRIII are also present (Rooiman et al.
Abundant aplitic and pegmatitic rocks are associated with the quartz monzonite.