ORTHOCLASTIC Definition & Meaning

orthoclastic

[ awr-thuh-klas-tik ]

Phonetic (Standard)IPA

adjective

Crystallography.

(of a crystal) having cleavages at right angles to each other.

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�y��vlog History and Origins

Origin of orthoclastic¹

1875–80; < German orthoklastisch, equivalent to ortho- ortho- + -klastisch clastic

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Example Sentences

Examples have not been reviewed.

There are consequently two series of felspars, one termed orthoclastic or orthotomous, and the other plagioclastic or clinotomous.

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Both plagioclastic and orthoclastic aventurine occur at several localities in the United States.

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If arranged with reference to their cleavage they are ORTHOCLASTIC, the fracture taking place always at a right angle; or PLAGIOCLASTIC, in which the cleavages are oblique to one another.

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Orthoclase is orthoclastic and monoclinic; all the other feldspars are plagioclastic and triclinic.

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