Diopside (English spelling)

Japanese: 透輝石 - とうきせき(英語表記)diopside
Diopside (English spelling)

A type of pyroxene, often light in color. It can be platy or columnar, or granular or fibrous. It is very common in metamorphic rocks of calcareous and dolomite origin, where it is associated with wollastonite, vesuvianite, cobaltite, forsterite, phlogopite, and scapolite. It also occurs in basic igneous rocks and syenite pegmatites. In addition to the cleavage characteristic of pyroxenes, it often has a well-developed split in one direction. This characteristic is particularly evident in the so-called heteroexfoliated pyroxenes. The English name is derived from the Greek word meaning "seeming two", probably due to the variety of crystal habits.

[Satoshi Matsubara]

[References] | Heteropyroxene | Magic rocks | Garnet | Pyroxene | Phlogopite | Forestry olivine | Wollastonite | Scapolite | Seyenite | Pegmatite [Additional information] | Diopside (Data Note)

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

輝石の一種で、淡色調のことが多い鉱物。板状、柱状の結晶形をするほか、粒状や繊維状にもなる。石灰質、苦灰質岩起源の変成岩類に珪(けい)灰石、ベスブ石、灰礬(かいばん)ざくろ石、苦土橄欖(かんらん)石、金雲母(きんうんも)、スカポライト(柱石(ちゅうせき))などを伴い、きわめて普通に産する。塩基性火成岩中や閃(せん)長岩質ペグマタイト中にも産する。輝石特有の劈開(へきかい)のほかに、しばしば一方向によく発達した裂開がみられる。いわゆる異剥(いはく)輝石といわれているものはこの性質が顕著なものである。英名は、ギリシア語の二つに見えるという意味から由来する。おそらく種々の晶癖(しょうへき)をもっているためであろう。

[松原 聰]

[参照項目] | 異剥輝石 | 塩基性岩 | 灰礬ざくろ石 | 輝石 | 金雲母 | 苦土橄欖石 | 珪灰石 | スカポライト | 閃長岩 | ペグマタイト[補完資料] | 透輝石(データノート)

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

<<:  Motivation - motivation

>>:  Toukisei - Toukisei

Recommend

Yasuyori Tamba

A physician from the Heian period. A native of Ta...

On-road model - On-road model

… [Type of motorcycle] There are many different t...

Sentaro Utsunomiya

1866-1940 A dairy farmer from the Meiji period to...

Kakairou Ritsuri - Kakairou Ritsuri

...A kyoka poet from the mid-Edo period. His surn...

Martinique (English spelling)

A French overseas department. A volcanic island in...

Aominouso

...The Shinetsu Main Line passes through here. [I...

"Essai sur la theory de nombre" (English: Essai sur la theory de nombre)

…In the 18th century, in addition to Euler, J.L. ...

Bignonia (English spelling)

Bignonia is an evergreen climbing shrub of the Big...

Extension field - kakudaitai (English spelling)

A mathematical term. K ' is said to be an exte...

Arsène Lupin

The protagonist of a series of adventure detective...

Reverse binding clause - Reverse binding clause

...This is 62% of unions with collective agreemen...

Rice exchange - beikokutorihikijo (English spelling)

An exchange for trading rice futures. Its purpose...

DNA Replication - DNA Replication

When a cell divides, the double-stranded DNA that ...

Mr. Abiru

…It is also notable that, despite its small size,...

Selaginella uncinata (English spelling) Selaginella uncinata

…[Masahiro Kato]. . . *Some of the terminology th...