蛍石

Also known as fluorspar, CaF2

高性能レンズに使われる鉱石

AI overview

Fluorite is a naturally occurring mineral made of calcium and fluoride that typically forms cube-shaped crystals. It's used in various industrial applications and is valued by collectors and scientists for its distinct crystalline structure.

AI-generated from the Wikipedia summary — may contain errors.

In the Vinony graph

Within Vinony's link graph, 蛍石 is referenced by 800 other articles, and connects out to fluorine, ultraviolet radiation and Mohs scale of mineral hardness.

It is catalogued under topics including Cubic minerals, Evaporite and Fluorine minerals.

Its subject is documented across 64 Wikipedia language editions.

Key facts

Mineral.name: Fluorite
Mineral.category: Halide mineral
Mineral.boxbgcolor: 305c3c
Mineral.boxtextcolor: fff
Mineral.image: 3192M-fluorite1.jpg
Mineral.imagesize: 260px
Mineral.caption: Deep green isolated fluorite crystal resembling a truncated octahedron, set upon a micaceous matrix, from Erongo Mountain, Erongo Region, Namibia (overall size: 50 mm × 27 mm, crystal size: 19 mm wide, 30 g)
Mineral.formula: CaF2
Mineral.IMAsymbol: Flr
Mineral.strunz: 3.AB.25
Mineral.system: Isometric
Mineral.class: Hexoctahedral (mm) H–M symbol: (4/m 2/m) (cF12)
Mineral.symmetry: Fmm (No. 225)
Mineral.unit cell: a = 5.4626 Å; Z = 4
Mineral.color: Colorless, although samples are often deeply colored owing to impurities; Purple, lilac, golden-yellow, green, blue, pink, champagne, brown.
Mineral.habit: Well-formed coarse sized crystals; also nodular, botryoidal, rarely columnar or fibrous; granular, massive
Mineral.twinning: Common on {111}, interpenetrant, flattened
Mineral.cleavage: Octahedral, perfect on {111}, parting on {011}

via Wikipedia infobox

Wikidata facts

Subclass of: halide class of minerals
Has part: calcium fluoride
Named after: fluid flow
Image: Fluorite crystals 270x444.jpg

Show 13 more facts

color: gold
Mohs' hardness: 4
Commons category: Fluorite
streak color: white
crystal system: cubic crystal system
chemical formula: CaF₂
Nickel-Strunz 9th edition (updated 2009): 3.AB.25
Nickel-Strunz '10th ed', review of (9th ed/ 2009 update): 3.AB.25
topic's main category: Category:Fluorite
type locality (geology): Jáchymov
described by source: Encyclopædia Britannica 11th edition
Strunz 8th edition (series ID, updated): III/A.07
IMA Mineral Symbol: Flr

Sources (6)

via Wikidata · CC0

Article · 日本語

蛍石（ほたるいし/けいせき、螢石、Fluorite、フローライト、フルオライト）は、鉱物（ハロゲン化鉱物）の一種。主成分はフッ化カルシウム（CaF2）。等軸晶系。色は無色、または内部の不純物により黄、緑、青、紫、灰色、褐色などを帯びる。加熱すると発光し、また割れてはじける場合がある。この光って弾ける様が蛍のようだということで、蛍石と名付けられた。また、不純物として希土類元素を含むものは、紫外線を照射すると紫色の蛍光を発する。蛍光する蛍石はイギリスや中国で産出されたものの中から稀に見つかることがある。へき開が良い鉱物であり、正八面体に割れる。モース硬度は4であり、モース硬度の指標となっている。比重は3.18。濃硫酸に入れて加熱するとフッ化水素が発生する。

Abstract from DBpedia / Wikipedia · CC BY-SA