Forms during contact metamorphism of impure magnesian limestones. Also in carbonatites, kimberlites, and serpentinized ultramafic rocks. Forms a series with ilmenite.
IMA Status:
Valid Species (Pre-IMA) 1892
Locality:
Gem gravels of the Rakwana and Balanoda districts, Sri Lanka. Link to MinDat.org Location Data.
Name Origin:
Named for Sir Archibald Geikie (1835-1924), Scottish geologist and Director-General of the Geological Survey of Great Brition.
Chemical Formula: 