quartz

Also known as SiO2, α-Quarz

minéral cristallin à base de silice

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 · Français

Le quartz est une espèce minérale du groupe des silicates, sous-groupe des tectosilicates, composé de dioxyde de silicium, ou silice, de formule chimique SiO2, avec des traces de différents éléments tels que Al, Li, B, Fe, Mg, Ca, Ti, Rb, Na, OH. Il se présente sous la forme ou bien de grands cristaux incolores, colorés ou fumés, ou bien de cristaux microscopiques d'aspect translucide. Constituant 12 % (en masse) de la lithosphère, le quartz est le minéral le plus commun (l'oxygène et le silicium sont respectivement les premier et deuxième constituants, par ordre d'importance, de la lithosphère) ; c'est un composant important du granite, dont il remplit les espaces résiduels, et des roches métamorphiques granitiques (gneiss, quartzite) et sédimentaires (sable, grès).

Abstract from DBpedia / Wikipedia · CC BY-SA