石英

Also known as SiO2, α-Quarz

二酸化ケイ素が結晶してできた鉱物

OverviewAI-generated

Quartz is a mineral with the chemical formula SiO₂. It has a Mohs hardness of 7 and a density of 2.65. The mineral is assigned the IMA Mineral Symbol Qz.

In mineral classification systems, quartz is categorized under Nickel-Strunz 9th edition (updated 2009) and the 10th edition as 4.DA.05. The Strunz 8th edition lists it under series ID IV/D.01a. The MCN code for the substance is 7104.10.00.

The subject appears in the Commons category and gallery titled "Quartz." Academic literature references the term in 22,004 PubMed articles. Additionally, the topic is referenced by 3,750 other encyclopedia articles.

Synthesized by Vinony from 13 facts across 3 sources: Wikidata, PubMed, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Key facts

Mineral.name: Quartz
Mineral.category: Tectosilicate minerals
Mineral.group: Quartz group
Mineral.image: Quartz Brésil.jpg
Mineral.caption: Quartz crystal cluster from Brazil
Mineral.formula: SiO2
Mineral.IMAsymbol: Qz
Mineral.strunz: 4.DA.05 (oxides)
Mineral.dana: 75.01.03.01 (tectosilicates)
Mineral.system: α-quartz: trigonal β-quartz: hexagonal
Mineral.class: α-quartz: trapezohedral (class 3 2) β-quartz: trapezohedral (class 6 2 2)
Mineral.symmetry: α-quartz: P3221 (no. 154)β-quartz: P6222 (no. 180) or P6422 (no. 181)
Mineral.unit cell: a = 4.9133 Å, c = 5.4053 Å; Z = 3
Mineral.color: Colorless, pink, orange, white, green, yellow, blue, purple, dark brown, or black
Mineral.habit: 6-sided prism ending in 6-sided pyramid (typical), drusy, fine-grained to microcrystalline, massive
Mineral.twinning: Common Dauphine law, Brazil law, and Japan law
Mineral.cleavage: none
Mineral.fracture: Conchoidal

via Wikipedia infobox

Research

22,004 papers

Quartz exposure in agriculture: literature review and South African survey.ReviewThe Annals of occupational hygiene · 2010Swanepoel AJ, Rees D, Renton K et al.DOI: 10.1093/annhyg/meq003
The quartz hazard: a variable entity.ReviewThe Annals of occupational hygiene · 1998Donaldson K, Borm PJDOI: 10.1016/s0003-4878(98)00044-1
A review of the fate of inhaled α-quartz in the lungs of rats.ReviewInhalation toxicology · 2019Kawasaki HDOI: 10.1080/08958378.2019.1597218
From quartz hazard to quartz risk: the coal mines revisited.ReviewThe Annals of occupational hygiene · 2002Borm PJ, Tran LDOI: 10.1093/annhyg/mef021
Determinants of Respirable Quartz Exposure Concentrations Across Occupations in Denmark, 2018.Annals of work exposures and health · 2022Boudigaard SH, Hansen KK, Kolstad H et al.DOI: 10.1093/annweh/wxab116
The quartz hazard: effects of surface and matrix on inflammogenic activity.ReviewJournal of environmental pathology, toxicology and oncology : official organ of the International Society for Environmental Toxicology and Cancer · 2001Donaldson K, Stone V, Duffin R et al.
On the assignment of quartz-like LiAlSi(2)O(6) - SiO(2) solid solutions in dental lithium silicate glass-ceramics: Virgilite, high quartz, low quartz or stuffed quartz derivatives?ReviewDental materials : official publication of the Academy of Dental Materials · 2022Hurle K, Lubauer J, Belli R et al.DOI: 10.1016/j.dental.2022.07.009
Single Intratracheal Quartz Instillation Induced Chronic Inflammation and Tumourigenesis in Rat Lungs.Scientific reports · 2020Nakano-Narusawa Y, Yokohira M, Yamakawa K et al.DOI: 10.1038/s41598-020-63667-4

via PubMed

Wikidata facts

Subclass of: tectosilicates
Part of: sand
Has part: silicon dioxide
Image: Quartz Brésil.jpg

Show 16 more facts

Commons gallery: Quartz
Mohs' hardness: 7
streak color: black
Commons category: Quartz
mineral fracture: conchoidal fracture
crystal system: trigonal crystal system
chemical formula: SiO₂
Nickel-Strunz 9th edition (updated 2009): 4.DA.05
Nickel-Strunz '10th ed', review of (9th ed/ 2009 update): 4.DA.05
topic's main category: Category:Quartz
MCN code: 7104.10.00
has characteristic: piezoelectricity
density: 2.65
IMA Mineral Symbol: Qz
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
Strunz 8th edition (series ID, updated): IV/D.01a

Sources (5)

via Wikidata · CC0

Article · 日本語

石英（せきえい、独: Quarz、英: quartz、クォーツ、クオーツ）は、二酸化ケイ素 (SiO2) が結晶してできた鉱物。六角柱状のきれいな自形結晶をなすことが多い。中でも特に無色透明なものを水晶（すいしょう、独: Bergkristall、英: rock crystal、ロッククリスタル）と呼び、古くは玻璃（はり）と呼ばれて珍重された。石英を成分とする砂は珪砂（けいしゃ・けいさ、独: Quarzsand、英: quartz sand）と呼ばれ、石英を主体としたからなる鉱石は珪石と呼ぶ。この珪石のうち、チャートや珪質砂岩が熱による変成（接触変成作用）を受けた変成岩を珪岩（クォーツァイト）と呼ぶが、この珪岩の中にフクサイト（クロム白雲母）の微細な粒子を含み鮮やかな緑色を呈色し、砂金のようなキラキラした輝きを発するものは特に砂金石（アベンチュリン）と呼ばれている。二酸化ケイ素 (SiO2) が、低温で水分を含みゆっくり固まったために原子配列が規則正しくない非晶質のものがオパール（蛋白石）である。二酸化ケイ素 (SiO2) に富んだ流紋岩質の溶岩が急激に冷やされることで生じるのが、非晶質の天然ガラスである黒曜石（オブシディアン）である。

Abstract from DBpedia / Wikipedia · CC BY-SA