Pistacite

Japanese: pistacite
Pistacite

...In the strict sense, it is a mineral with the chemical composition Ca 2 (Al,Fe 3+ ) 3 Si 3 O 12 (OH) that belongs to the epidote group along with zoisite, pionite, and allanite . Minerals with low Fe 3+ and close to Ca 2 Al 3 Si 3 O 12 (OH) are sometimes called clinozoisite, and minerals with high Fe 3+ and close to Ca 2 Al 2 Fe 3+ Si 3 O 12 (OH) are sometimes called pistacite. They belong to the monoclinic system and are mainly columnar in shape, but often occur as massive or granular aggregates. ...

*Some of the terminology explanations that mention "pistacite" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…狭義には,ゾイサイト,紅レン石,褐レン石とともに緑レン石族に属する,化学組成Ca2(Al,Fe3+)3Si3O12(OH)の鉱物。Fe3+が少なくCa2Al3Si3O12(OH)に近い成分のものをクリノゾイサイトclinozoisite,Fe3+が多くCa2Al2Fe3+Si3O12(OH)に近いものをピスタサイトpistaciteと呼ぶことがある。単斜晶系に属し,形は主として柱状であるが,塊状または粒状集合体として産することも多い。…

※「pistacite」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

<<:  Pistacia lentiscus (English name) Pistacialentiscus

>>:  Pista cristata (English spelling)

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