Image Credit: Malcolm Southwood
Specimen Title
Aragonite (v. tarnowitzite)
Associated Minerals
malachite (?)
Principal Mineral
Size
Cabinet; 60mm
Location in the Mine
Undetermined
Provenance
Phillips, S.R.; Sussman, M.; Amo, C.; Pinch, W.W.
Collection
MGMH; 2020.7.1982
Entry Number
Specimen; TSNB646
Description
Prismatic trillings of aragonite (to 14 mm), with a very slight reverse taper (i.e. widening towards the termination), a habit typical of the Pb-bearing variety tarnowitzite. The aragonite is mostly colourless-white, but parts of the specimen appear to have grown in contact with malachite (?), inclusions of which lend a green colouration to some of the crystals.
Semi-quantitative EDS indicates that the aragonite contains approximately 3.7 wt % Pb (Frank Keutsch; Harvard University, 2025).
The specimen is from the Bill Pinch Collection and belonged formerly to Steven Phillips, Marshall Sussman and Chris Amo. The location in the mine is unrecorded.
