mineral
Jasper
Chalcedony (SiO2)
AI-generated identification · may be incorrectHardness 6.5-7, opaque, yellow/brown/black colors, waxy to dull luster, microcrystalline quartz structure.
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Physical properties
Hardness 6.5-7, opaque, yellow/brown/black colors, waxy to dull luster, microcrystalline quartz structure.
Formation & geological history
Forms from silica-rich fluids in sedimentary or volcanic environments, often containing iron oxide impurities which give it color.
Uses & applications
Used in lapidary work, jewelry, and as ornamental stone or collector's item.
Geological facts
Jasper comes in many color variations and patterns. This yellow and black variety resembles certain types of picture or landscape jasper.
Field identification & locations
Identified by its opacity, hardness, and conchoidal fracture. Often found as river rocks or in desert environments.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary