- albite twin
- 钠长石双晶
English-Chinese geology dictionary (英汉地质大词典). 2013.
albite twin
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albite — [al′bīt΄] n. [< L albus, white + ITE1] a usually milky white variety of plagioclase, NaAlSi3O8, found in various plutonic rocks, esp. granite and syenite, often with twin crystals … English World dictionary
Litchfieldite — is a rare metamorphosed igneous rock. It is a variety of nepheline syenite and is composed of two near pure phases of feldspar, albite and microcline, with predominance of the first one, plus nepheline, sodalite, cancrinite and calcite. The mafic … Wikipedia
Crystal twinning — Diagram of twinned crystals of Albite. On the more perfect cleavage, which is parallel to the basal plane (P), is a system of fine striations, parallel to the second cleavage (M). Crystal twinning occurs when two separate crystals share some of… … Wikipedia
Pericline — also refers to a doubly plunging anticline or syncline. Pericline is a form of albite exhibiting elongate prismatic crystal. Pericline twinning is a type of crystal twinning which show fine parallel twin laminae typically found in the alkali… … Wikipedia
Pollucite — is a zeolite mineral with the formula (Cs,Na)2Al2Si4O12·2H2O with iron, calcium, rubidium and potassium as common substituting elements. It is important as a significant ore of caesium and sometimes rubidium. It forms a solid solution series with … Wikipedia
