Rock Identifier
Granite or Quartzite Pebble — igneous/metamorphic
igneous/metamorphic

Granite or Quartzite Pebble

Hard, rough texture, rounded from weathering, purplish-grey color.

Identified More igneous/metamorphic
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Physical properties

Hard, rough texture, rounded from weathering, purplish-grey color.

Formation & geological history

Formed through cooling of magma or metamorphism of sandstone, subsequently weathered and rounded by water transport.

Uses & applications

Commonly found on the ground, sometimes used in landscaping or construction aggregate.

Geological facts

A common field stone, shaped by glacial or river action.

Field identification & locations

Identify by hardness, lack of clear cleavage, and rounded shape. Found in riverbeds, glacial deposits, and fields.