mineral
Quartz Nodule
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, grayish-white color, vitreous to waxy luster, and conchoidal fracture.
Identified More mineral →
Explore Quartz Nodule in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 7 on the Mohs scale, grayish-white color, vitreous to waxy luster, and conchoidal fracture.
Formation & geological history
Formed through the precipitation of silica from groundwater within cavity linings or sedimentary host rocks over millions of years.
Uses & applications
Used in lapidary arts, decorative items, mineral collections, and as a raw material for industrial silica.
Geological facts
Nodules often form in limestone or chalk beds, protecting the inner quartz or chalcedony from weathering.
Field identification & locations
Identify by its high hardness, inability to be scratched by steel, and waxy or glassy texture on broken surfaces. Commonly found in creek beds and sedimentary formations.
