leptochlorite

English

Etymology

From lepto- +‎ chlorite.

Noun

leptochlorite (plural leptochlorites)

1. (mineralogy) A chlorite that contains mostly ferric iron rather than ferrous iron. Leptochlorites are typically richer in trivalent ions relative to silicon and divalent ions.
   • 1914, Victor Ziegler, The Minerals of the Black Hills (South Dakota School of Mines Bulletin No. 10)‎^[1], page 181:

     Analysis I is incomplete, but analysis II may be readily recalculated into leptochlorite made up of mixtures of the following moleculas in the proportion indicated […]

   • 2012, Robert W. Boyle, Gold: History and Genesis of Deposits‎^[2], page 108:

     […] contemporaneous with gold are gilbertite, leptochlorite, tourmaline, iron sulphides, feldspar, (rare) carbonates, and quartz; post gold minerals are quartz, zinc and lead sulphides, and many others of geophases K and L.

   • 1967 [1965], A. I. Perelman, translated by N. N. Kohanowski, Geochemistry of Epigenesis‎^[3], translation of original in Russian, page 199:

     The reduced, bivalent iron partly migrates and partly becomes fixed in the form of leptochlorites or siderite.