Definition of Oligoclase. Meaning of Oligoclase. Synonyms of Oligoclase

- Oligoclase is a rock-forming mineral belonging to the plagioclase feldspars. In chemical composition and in its crystallographic and physical characters...
- Sunstone is a microcline or oligoclase feldspar, which when viewed from certain directions exhibits a spangled appearance. It has been found in Southern...
- Gotthard.[better source needed] A solid solution of the plagioclase feldspar oligoclase +/− the pot****ium feldspar orthoclase also produces moonstone specimens...
- silica and related volcanics such as andesite. Oligoclase is common in granite and monzonite. The name oligoclase is derived from the Gr**** olígos ('small,...
- variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites that occur in the oceanic crust or in ophiolites are usually...
- Osumilite Otavite Ottrelite Otwayite Varieties that are not valid species: Oligoclase (a mixture of albite and anorthite) Onyx (a monochromatic banded variety...
- (/ˈmʌɡiəraɪt/) is a type of oligoclase-bearing basalt, comprising olivine, apatite, and opaque oxides. The main feldspar in mugearite is oligoclase. Mugearite is a...
- KAlSi3O8 Plagioclase feldspar series Albite (sodium endmember) – NaAlSi3O8 Oligoclase – (Na,Ca)Al(Si,Al)Si2O8    (Na:Ca 90:10 to 70:30) Andesine – (Na,Ca)Al(Si...
- (var.) Rainbow (var.) Orthoclase Unakite Plagioclase Albite Labradorite Oligoclase Sanidine Sunstone Oregon sunstone Rainbow lattice sunstone Fergusonite...
- with phaneritic texture. Feldspar is present as plagioclase (typically oligoclase or andesine) with 10% or less pot****ium feldspar. Quartz is present at...