sedimentary
Sandstone with Quartz Vein
Quartz-cemented quartz arenite
Hardness of 6-7 on the Mohs scale due to quartz content, brownish-gray color, dull to sub-vitreous luster, clastic texture with visible sand grains and a prominent protruding or contrasting quartz-filled fracture vein.
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Physical properties
Hardness of 6-7 on the Mohs scale due to quartz content, brownish-gray color, dull to sub-vitreous luster, clastic texture with visible sand grains and a prominent protruding or contrasting quartz-filled fracture vein.
Formation & geological history
Formed through the accumulation, compaction, and lithification of sand-sized mineral particles or rock fragments, predominantly quartz, over millions of years in desert, river, or marine environments, subsequently fractured and healed by hydrothermal quartz precipitation.
Uses & applications
Used primarily as decorative landscaping boulders, dimension stone, or raw specimens for geological study and fossil hunting.
Geological facts
Sandstone often preserves ancient environments, and veins running through them indicate later tectonic activity where mineral-rich fluids flowed through cracks and crystallized.
Field identification & locations
Can be identified in the field by its gritty texture and visible sand grains, with veins standing out due to differential weathering against the softer matrix.
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