orthoclase

Noun

Meaning

Common or potash feldspar crystallizing in the monoclinic system and having two cleavages at right angles to each other. See Feldspar.

Synonyms

Hypernyms

Examples

Composition of syenites The feldspar component of syenite is predominantly alkaline in character (usually orthoclase ). Source: Internet

Cleavage, parting, fracture, and tenacity main Perfect basal cleavage as seen in biotite (black), and good cleavage seen in the matrix (pink orthoclase ). Source: Internet

This then causes orthoclase and biotite, both K rich minerals into which Rb can substitute, to precipitate. Source: Internet

Feldspar (Amazonite) Perthite is either microcline or orthoclase with thin lamellae of exsolved albite. Source: Internet

In the acid rocks the common feldspars are orthoclase, perthite, microcline, and oligoclase—all having much silica and alkalis. Source: Internet

Leucite is very rare in plutonic masses; many minerals have special peculiarities in microscopic character according to whether they crystallized in depth or near the surface, e.g., hypersthene, orthoclase, quartz. Source: Internet

Close letter words and terms