Etymology

marcasite

mar·ca·site
M3A1R1C3A1S1I1T1E1

Today it means: The orthorhombic form of iron disulfide, FeS₂, occurring as yellow crystals. Full definition →

First used 19th c.Arabic مَرْقَشِيتَا (marqašītā) ← Sumerian 𒈥𒄩𒅆𒆠
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The story

  1. Sumerian𒈥𒄩𒅆𒆠
  2. Arabicمَرْقَشِيتَا (marqašītā)
  3. English todaymarcasite

From Medieval Latin marchasita et al., from Arabic مَرْقَشِيتَا (marqašītā).

First known use, by meaning

  • from 19th c. The orthorhombic form of iron disulfide, FeS₂, occurring as yellow crystals.
  • from 15th c. Any of various metal sulfides, usually iron sulfide minerals.

Etymology from Wiktionary, CC BY-SA 4.0.