crystal on a matrix of quartz, jalpaite, pyrite crystals and chalcopyrite crystals is accompanied by, and partially encloses, native copper wires (identification by E.
, considered to be the world's finest, is found as crystals that exceed 5 cm in size.
Finally, there was Art Soregaroli's superb sellaite
from the Huanzala mine, Huanuco province, Peru: a sharp, gemmy, colorless crystal measuring 2.
The copper minerals are always surrounded by, and may be associated with, the alteration minerals sericite, chlorite, quartz, calcite, dolomite, fluorite, sellaite
, talc, gypsum and montmorillonite.
No fewer than 30 other halides are found there, including carobbite, sellaite
, lawrencite, scacchite, molysite and malladrite.