mineral
Rounded quartz pebble (tentative)
Quartz, silicon dioxide (SiO₂)
AI-generated identification · may be incorrectSmall, smooth, rounded pale-white object with a dull to weakly vitreous surface; likely hardness about 7 Mohs, no visible cleavage, and specific gravity near 2.65. The image is low-detail, so mineral identification is not certain.
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Physical properties
Small, smooth, rounded pale-white object with a dull to weakly vitreous surface; likely hardness about 7 Mohs, no visible cleavage, and specific gravity near 2.65. The image is low-detail, so mineral identification is not certain.
Formation & geological history
Likely a naturally water-worn quartz pebble or quartz-rich rock fragment; quartz formed in igneous, metamorphic, or sedimentary settings and is geologically very old. The reported southeastern Victoria location plausibly contains transported quartz pebbles.
Uses & applications
Common quartz is used in glass, ceramics, engineered stone, abrasives, electronics, and collecting; this specimen has little commercial value unless unusually clear or attractive.
Geological facts
Quartz commonly fractures conchoidally and scratches ordinary glass, but a scratch test should be done cautiously. It may also be a pale chalcedony, feldspar, or an ordinary light-colored pebble rather than quartz.
Field identification & locations
Check whether it scratches glass, inspect for translucent edges and conchoidal fracture, and test for acid reaction (none expected). Common in creek gravels and soils around southeastern Australia.
