Latin sideritis (“lodestone”), from Ancient Greek σιδηρῖτις (sidērîtis, “loadstone”).
siderite (countable and uncountable, plural siderites)
- (uncountable, mineralogy) a widespread brown mineral, FeCO3, having the structure of calcite
- (countable) an iron meteorite
- An indigo-blue variety of quartz.
- (obsolete) magnetic iron ore; lodestone
- “Siderite” in David Barthelmy, Webmineral Mineralogy Database, 1997–.
- siderite mindat.org, Hudson Institute of Mineralogy, accessed 29 August 2016