Barite - Jyuushoseki (English spelling) barite

Japanese: 重晶石 - じゅうしょうせき(英語表記)barite
Barite - Jyuushoseki (English spelling) barite

It is one of the most common anhydrous sulfate minerals. It occurs in low-temperature hydrothermal vein deposits, kuroko deposits, hot spring deposits, metamorphosed stratified manganese deposits, as rocks consisting almost entirely of barite in sedimentary rocks, and in desert regions it often forms floral aggregates of flat crystals called "desert roses". It is often euhedral and obliquely plate-shaped, and is characterized by its color, high specific gravity, low hardness, and cleavage. In Japan, it is famous for its production in the Teine Mine (closed) in Sapporo, Hokkaido, Matsukura Mine (closed) in Otaru, Hokkaido, Kosaka Mine (closed) in Kosaka Town, Kazuno County, Akita Prefecture, and Tamagawa Onsen in Akita Prefecture, which produced lead-containing varieties. The English name comes from the Greek word barys, meaning "heavy".

[Akira Kato, May 19, 2017]

[References] | Euhedral | Barium | Cleavage [Additional information] | Baryte (Data Note)
Barite
Katsuyama Mine, Kaminokuni-cho, Hiyama-gun, Hokkaido ©Masutomi Geological Society Museum, Public Interest Incorporated Foundation

Barite


Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

無水硫酸塩鉱物でもっとも普通のバリウムの鉱物の一つ。低温熱水鉱脈鉱床、黒鉱鉱床、温泉沈殿物、変成層状マンガン鉱床中に産するほか、堆積(たいせき)岩中にほとんど重晶石のみからなる岩石として産し、また砂漠地域ではしばしば「砂漠の薔薇(ばら)」と称する扁平(へんぺい)な結晶の花卉(かき)状集合体を形成する。自形は多く斜方板状で、色、大きい比重、低硬度、劈開(へきかい)などが特徴。日本では、北海道札幌市手稲(ていね)鉱山(閉山)、同小樽(おたる)市松倉鉱山(閉山)、秋田県鹿角(かづの)郡小坂(こさか)町小坂鉱山(閉山)などをはじめ、含鉛変種を産した秋田県玉川温泉などが産地として有名である。英名は「重い」を意味するギリシア語barysに由来する。

[加藤 昭 2017年5月19日]

[参照項目] | 自形 | バリウム | 劈開[補完資料] | 重晶石(データノート)
重晶石
北海道檜山郡上ノ国町 勝山鉱山産©公益財団法人益富地学会館">

重晶石


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