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File:Malawi_Agate_(Malawi,_southeastern_Africa)_(32734668126).jpg · Wikimedia Commons · See Wikimedia Commons

EntityQ123314· pop 88· linked from 632 articles

Also known as SiO₂, SiO2

یک سنگ با سختی بین ۶ تا ۷.۵

AI overview

Agate is a semi-transparent, banded stone made of chalcedony that comes in many varieties and can be found worldwide in nature. People value agates for their distinctive colored bands and decorative appeal, though the term is sometimes loosely applied to similar-looking stones that aren't technically true agates.

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

Key facts

Mineral.name
Agate
Mineral.category
Tectosilicate minerals
Mineral.group
Quartz group
Mineral.image
Malawi Agate (Malawi, southeastern Africa) (32734668126).jpg
Mineral.IMAstatus
Variety of quartz (chalcedony)
Mineral.boxbgcolor
bb361c
Mineral.boxtextcolor
fff
Mineral.imagesize
260px
Mineral.caption
Polished agate nodule from Malawi, Africa
Mineral.formula
SiO2 (silicon dioxide)
Mineral.cleavage
None
Mineral.color
Often multicolored; commonly colorless, pale blue to black, red to orange, yellow, white, brown, pink, purple; rarely green
Mineral.habit
Cryptocrystalline silica
Mineral.system
Trigonal (quartz) or monoclinic (moganite)
Mineral.fracture
Conchoidal
Mineral.mohs
6.5–7
Mineral.luster
Waxy, vitreous when polished
Mineral.refractive
1.530-1.543

via Wikipedia infobox

Wikidata facts

Instance of
mineral variety
Subclass of
gemstone
Named after
Dirillo
Image
Achat Mineral aus Brasilien.jpg
Show 5 more facts
Commons category
Agate
streak color
white
chemical formula
SiO₂
density
2.6
Mohs' hardness
7
Sources (3)

via Wikidata · CC0

Gallery (632)