Mineral/Rock
Nephrite Jade
Nephrite
AI-generated identification · may be incorrectMetamorphic rock, a variety of the mineral amphibole
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Physical properties
Metamorphic rock, a variety of the mineral amphibole
Formation & geological history
Formed in metamorphic settings, often in areas with serpentine rocks, through alteration of calcium-rich igneous rocks, or through metamorphism of magnesian limestones or dolomites, usually found in convergent plate boundaries.
Uses & applications
Historically used for tools, weapons, and ceremonial objects, prized for ornamental carvings, jewelry, and sculptures.
Geological facts
A hard, tough material often confused with 'Jadeite', which is a pyroxene mineral. The term 'jade' broadly encompasses both nephrite and jadeite.
Field identification & locations
Highly valued in many cultures, particularly in East Asia (China) and Mesoamerica, for its beauty and symbolic meaning.
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Unknown brown-and-gold rock fragment
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Unidentified weathered mineral/rock fragment
Indeterminate; likely a weathered iron-rich silicate or sulfide-bearing specimen
mineral
Sandstone (with Moss)
Quartz Arenite / Sandstone
sedimentary
Gravel / Crushed Stone
Aggregate (mixed mineral rock fragments)
sedimentary
Sandstone
Sandstone (SiO2-dominated clastic rock)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary