What is pyrite stone?

Pyrite, often called "fool's gold" due to its resemblance to gold, is a fascinating and relatively common mineral. Here's some key information:

  • Composition: Pyrite is an iron sulfide, with the chemical formula FeS₂.

  • Appearance: It typically exhibits a brass-yellow metallic luster and can form cubic, octahedral, or pyritohedral crystals. https://www.wikiwhat.page/kavramlar/Crystal%20Structure is very important factor in its look.

  • Hardness: Pyrite is relatively hard, with a Mohs hardness of 6-6.5.

  • Occurrence: It is found in a wide variety of geological settings, including sedimentary rocks, igneous rocks, and metamorphic rocks.

  • Uses: Historically, pyrite has been used as a source of iron and sulfur. It is also used in the production of sulfuric acid and as a gemstone (though less common). It is sometimes also used as a https://www.wikiwhat.page/kavramlar/source%20of%20sulfur.

  • Distinguishing from Gold: Key differences include pyrite's greater hardness (gold is soft and malleable) and its cubic crystal habit (gold typically forms irregular nuggets). Additionally, pyrite leaves a greenish-black streak when rubbed against a streak plate, while gold leaves a golden-yellow streak.

  • Caution: Pyrite can sometimes oxidize in humid conditions, forming iron oxides and sulfuric acid. This process, known as pyrite decay, can damage specimens and surrounding materials. So, https://www.wikiwhat.page/kavramlar/humidity is an important factor.