leptochlorite

plural leptochlorites

1. chemistryA chlorite that contains mostly ferric iron rather than ferrous iron. Leptochlorites are typically richer in trivalent ions relative to silicon and divalent ions.

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

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

   2 more examples

   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 […]

   1914, Victor Ziegler, The Minerals of the Black Hills (South Dakota School of Mines Bulletin No. 10), page 181

   […] 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.

   2012, Robert W. Boyle, Gold: History and Genesis of Deposits, page 108