Definition of framboid
A minute spheroidal grain of pyrite or an aggregate of such grains, commonly formed at low temperatures in oxygen-poor mud sediments containing organic matter, especially in marine mud deposits. First published use by Rust (1935). From the French framboise, "raspberry".
References:
Bates, Robert L. and Jackson, Julia, eds. Dictionary of Geological Terms. Garden City, New York: Anchor Press/Doubleday, 1984.
Framboid. https://en.wikipedia.org/wiki/Framboid, accessed 1 March 2019.
Rust, G.W. (1935) Colloidal primary copper ores at Cornwall mines, southeastern Missouri. Journal of Geology, 43:398-426.
References:
Bates, Robert L. and Jackson, Julia, eds. Dictionary of Geological Terms. Garden City, New York: Anchor Press/Doubleday, 1984.
Framboid. https://en.wikipedia.org/wiki/Framboid, accessed 1 March 2019.
Rust, G.W. (1935) Colloidal primary copper ores at Cornwall mines, southeastern Missouri. Journal of Geology, 43:398-426.