
mineral
Mixed Mineral Collection (with Quartz, Beryl, and host rock)
Silicon Dioxide (Quartz), Be3Al2Si6O18 (Beryl), and associated Schist/Pegmatite
AI-generated identification · may be incorrectVariable: Quartz (H: 7.0, vitreous, hexagonal); Emerald/Beryl (H: 7.5-8.0, green, vitreous, hexagonal prisms); Host rock (foliated, dark grey/green, dull to pearly luster).
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Physical properties
Variable: Quartz (H: 7.0, vitreous, hexagonal); Emerald/Beryl (H: 7.5-8.0, green, vitreous, hexagonal prisms); Host rock (foliated, dark grey/green, dull to pearly luster).
Formation & geological history
Formed in hydrothermal veins and pegmatite deposits where cooling magma or hot mineral-rich fluids interact with metamorphic host rocks, often during Orogenic events (mountain building).
Uses & applications
Primarily used for lapidary work, gemstone collecting, and as scientific specimens. Low-grade Beryl is used for Beryllium ore; Quartz is used in electronics and glass.
Geological facts
The green crystals are likely Emerald (a variety of Beryl) in their raw matrix. North Carolina is a famous US locality where these 'mine-your-own' buckets are commonly sourced.
Field identification & locations
Identify by hexagonal crystal habits, hardness (resistance to scratching steel), and the association of green beryl within dark, micaceous schist or white quartz matrix.
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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