Where is Pyrite found?

Pyrite occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.

Where to find Pyrite

Collecting tips

1. Look for Metallic Luster. Pyrite's bright, metallic luster is a key identifier. It often stands out against duller host rocks.
2. Check for Crystal Forms. Cubic, octahedral, or pyritohedral crystals are very characteristic. Look for these geometric shapes.
3. Perform a Streak Test. Pyrite leaves a greenish-black streak, which distinguishes it from gold (yellow streak) and chalcopyrite (greenish-black streak, but softer and often tarnished).
4. Assess Hardness. Pyrite is harder than gold (Mohs 2.5-3) and chalcopyrite (Mohs 3.5-4). It will scratch glass and cannot be scratched by a knife.
5. Consider Associated Minerals. Pyrite often occurs with quartz, calcite, galena, sphalerite, and other sulfide minerals. Its presence can indicate a mineralized zone.
6. Safety Warning: Acid Generation. Pyrite can react with oxygen and water to form sulfuric acid and iron hydroxides (acid mine drainage). This process can be accelerated by bacteria. When collecting or storing pyrite, especially in humid environments, be aware of potential acid generation. Avoid prolonged skin contact with weathered pyrite and wash hands after handling. Do not ingest. Inhalation of dust should be avoided, as with any mineral.

Quick Check

Color:

Brass-yellow to golden-yellow

Luster:

Metallic

Streak:

Greenish-black

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