Marcasite Ascension Tumble Stone 20-25mm Single

SKU: 80308591
Marcasite Ascension Tumble Stone 20-25mm Single

Marcasite Ascension Tumble Stone 20-25mm Single

SKU: 80308591
Regular price £12.95
/
Tax included. Shipping calculated at checkout.
Only 13 items in stock!
  • DHL Next Delivery £4.92
  • No quibble returns policy
  • Sustainable Packaging
  • Secure payments

The mineral marcasite, sometimes called white iron pyrite, is iron sulfide (FeS2) with orthorhombic crystal structure. It is physically and crystallographically distinct from pyrite, which is iron sulfide with cubic crystal structure. Both structures do have in common that they contain the disulfide S22- ion having a short bonding distance between the sulfur atoms. The structures differ in how these di-anions are arranged around the Fe2 cations. Marcasite is lighter and more brittle than pyrite. Specimens of marcasite often crumble and break up due to the unstable crystal structure. On fresh surfaces it is pale yellow to almost white and has a bright metallic luster. It tarnishes to a yellowish or brownish color and gives a black streak. It is a brittle material that cannot be scratched with a knife. The thin, flat, tabular crystals, when joined in groups, are called "cockscombs." (wikipedia)

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Rated /5 based on customer reviews