mineral
Quartz (Heart-Shaped Pebble)
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale, typically white, clear, or light brown in this weathered form, vitreous to greasy luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, typically white, clear, or light brown in this weathered form, vitreous to greasy luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.
Formation & geological history
Formed through crystallization from silica-rich hydrothermal solutions or cooling magma, subsequently weathered, eroded, and shaped by water and abrasion into a pebble.
Uses & applications
Commonly collected as a curiosity due to its heart shape. Quartz is otherwise widely used in electronics, glassmaking, construction materials, and jewelry.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Specimens naturally weathered into symbolic shapes like hearts are popular novelty finds among beachcombers and rockhounds.
Field identification & locations
Easily identified by its high hardness (scratches glass) and conchoidal fracture. Found worldwide in nearly all geological environments, particularly in rivers, beaches, and gravel deposits.
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Arenite (SiO2 based)
sedimentary
Soil with Mineral Detritus and Quartz Fragments
Regolith / Silicate Mineral Aggregate
sedimentary
Limonite / Goethite (Iron Ore Mineral nodule)
FeO(OH)·nH2O / FeO(OH)
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Septarian Pebble
Septarian nodule / Concretion
sedimentary
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Schist
Schist
Metamorphic