Stilpnomelane (English spelling)

Japanese: スチルプノメレーン(英語表記)stilpnomelane
Stilpnomelane (English spelling)
A hydrous silicate mineral rich in Fe and containing small amounts of Al and Mg. Its chemical composition is (K,Na,Ca)(Fe3 + , Fe2 + , Mg,Al) 12 (Si,Al) 18 (O,OH ) 54nH2O . Some types are mainly Fe2+ and others are mainly Fe3 + . Triclinic crystal system. It has a complex layered structure. It has fine black leaflets and resembles biotite, but is more brittle than mica, with slightly incomplete basal cleavage and some perpendicular cleavage. Mohs hardness 3-4, specific gravity 2.6-3.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
Feに富み,少量のAl,Mgなどを含む含水ケイ酸塩鉱物。化学組成は(K,Na,Ca)(Fe3+,Fe2+,Mg,Al)12(Si,Al)18(O,OH)54nH2Oで表される。Fe2+を主とするものとFe3+を主とするものがある。三斜晶系。複雑な層状構造をもつ。黒色の微細な葉片状をなし,黒雲母に似るが,雲母よりもろく,底面のへき開はやや不完全で,これに直交するへき開もある。モース硬度3~4,比重2.6~3。

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

<<:  Stilbene - Stilbene

>>:  Stilb

Recommend

Carex maximowiczii (English spelling)

…[Tetsuo Koyama]. … *Some of the terminology that...

Anchusa capensis - Anchusa capensis

...When it blooms in flower beds in early summer,...

Laterite (English spelling)

A soil rich mainly in iron and aluminium. The term...

Soufflé glacé (English spelling)

...Typical varieties include cheese souffle, seaf...

Osei Tutu - Osei Tutu

…Until the second half of the 17th century, the A...

Suomalaiset

… 【history】 [The Age of the Proto-Finnish] The Fi...

Ethyl Carbamate

C 3 H 7 NO 2 (mw 89.09). NH 2 COOC 2 H 5 . Also ca...

Multiple cropping - tamousaku

Cultivating crops on the same land more than twice...

ECF

extracellular fluid Source : Internal Medicine, 10...

ILP (Industrial Liason Program)

"ILP" is an abbreviation for Industrial ...

Figurehead - figurehead

One of the decorations on a ship is a sculpture t...

Eighth Dan - Hachidan

Koto music Recruitment Composed by Kengyo Yatsuha...

Laupen

…In 1218, when the family line died out, it becam...

Brenthis daphne (English spelling)

...In the narrow sense, it refers to one of these...

Occupational Safety and Health - roudou anzen eisei

An occupational accident is an injury, illness, or...