mineral
Orange Calcite / Quartzite with Iron Staining
Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) with Iron Oxide impurities
Hardness: 3-7 (Calcite vs Quartz), Color: Creamy white with orange/peach iron streaks, Luster: Vitreous to waxy, Crystal Structure: Trigonal/Hexagonal, Cleavage: None (Quartz) to Perfect (Calcite)
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Physical properties
Hardness: 3-7 (Calcite vs Quartz), Color: Creamy white with orange/peach iron streaks, Luster: Vitreous to waxy, Crystal Structure: Trigonal/Hexagonal, Cleavage: None (Quartz) to Perfect (Calcite)
Formation & geological history
Formed through hydrothermal processes, sedimentary precipitation, or metamorphism of sandstone/limestone. Peach and orange tones are often due to Hematite or Limonite staining in fractures.
Uses & applications
Commonly used as pocket stones, decorative ornaments, landscape gravel, and in metaphysical practices as a 'healing crystal' for energy and focus.
Geological facts
This specimen appears to be tumbled and polished. Iron oxide is the most common natural 'paint' in geology, responsible for the red, orange, and yellow hues found in rocks worldwide.
Field identification & locations
Identify by checking hardness; quartz will scratch glass, whereas calcite will bubble if exposed to weak acid (like vinegar). Commonly found in riverbeds or near mountain outcrops.
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Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Gypsum (variety Selenite or Alabaster)
Calcium sulfate dihydrate (CaSO4·2H2O)
Mineral
Nephrite Jade
Nephrite
Mineral/Rock
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock