Home > Type Localities II – August 5 > MS1622 Redledgeite

Redledgeite - Sold

Redledgeite is a complex oxide mineral and a member of the hollandite group. Strunz (1961) named the species after its type locality, the Red Ledge mine. Gatehouse et al. (1986) refined the crystal structure as monoclinic, and noted that redledgeite shows two distinct habits: yellow-green fibers and lustrous black dipyramidal crystals. Foley et al. (1997) refined the crystal structure of another specimen, finding tetragonal symmetry. Recently, the International Mineralogical Association defined the ideal formula of redledgeite as Ba(Ti4+6Cr3+2)O16 (Biagoni et al., 2013).

This example of has a 11 by 4 mm coverage of fibrous yellow-green redledgeite. The matrix is massive chromite; a hint of purplish clinochlore in also present. This specimen was part of the Charles Trantham (1936-2020) estate.