Image Credit: RRUFF Database Project (Lafuente et al. 2015; RRUFF ID 150128).
Image Credit: RRUFF Database Project (Lafuente et al. 2015; RRUFF ID 150128).
Specimen Title
Munakataite (w. plumboselite)
Associated Minerals
clausthalite; galena; mimetite; orlandiite (?); plumboselite; quartz; smithsonite
Principal Mineral
Size
Miniature; 46mm
Location in the Mine
Second oxidation zone (?)
Provenance
Rheinländer, M.; Flynn, S.; Feinglos, M.N.
Collection
MGMH; 2022.4.10403T
Entry Number
Specimen; TSNB528
Description
A matrix consisting mainly of galena, unidentified iron oxides and quartz, hosts numerous small sprays of acicular blue crystals of munatakaite (Exhibit 2). Associated minerals include mimetite, plumboselite and smithsonite (all confirmed by EDS and Raman spectroscopy) and possible orlandiite (?) which is EDS indicated but not confirmed.
The specimen is from the Feinglos Collection but belonged previously to Shields Flynn, who bought it from Mathias Rheinländer in 2015, labelled as connellite. Flynn was suspicious about the connellite identification and submitted the specimen to the RRUFF Project for further study (RRUFF ID 150128), leading to the identification of munatakaite and the associated species listed here (Flynn et al. 2016).
There is no record of location in the mine but the association with plumboselite points to a probable second oxidation zone origin.
