Rocksday

Rosasite

A copper zinc carbonate forming small blue-green balls of radiating fibers.

Rosasite specimen
Photo: Robert M. Lavinsky, CC BY-SA 3.0, via Wikimedia Commons

How to identify rosasite

  • Blue-green spheres, often on brown limonite.
  • Radiating fibers inside when broken.
  • Fizzes in acid.

Often confused with

Where it's found

  • Ojuela mine, Mexico
  • Rosas mine, Sardinia
  • Arizona

Uses

Collector specimens.

Rock tumbling

Not suitable for tumbling.

Did you know?

It's named after the Rosas mine in Sardinia.

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