mineral
Agate
SiO2
Hardness: 6.5-7, Color: Variable, Luster: Waxy to dull, Crystal structure: Cryptocrystalline, Cleavage: None
- Hardness
- 6
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Physical properties
Hardness: 6.5-7, Color: Variable, Luster: Waxy to dull, Crystal structure: Cryptocrystalline, Cleavage: None
Formation & geological history
Forms in cavities of volcanic rocks or in sedimentary environments
Uses & applications
Jewelry, lapidary arts, ornamental carving
Geological facts
Agate is a variety of chalcedony characterized by its banded patterns.
Field identification & locations
Identify by banded patterns and waxy luster; commonly found worldwide.
More like this
Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Nephrite Jade
Nephrite
Mineral/Rock
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock
![Green Apatite on Albite (Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]) — mineral](https://media.rockidentification.com/2391a63f-fb20-47d5-af9a-2035851eb32e-thumbnail.jpg)
Green Apatite on Albite
Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]
mineral