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Ephesite - Gloucester mine, Gloucester Farm, Postmasburg manganese field, Northern Cape, South Africa. (#:MINS9172)

Beautiful and lustrous crystals of the very rare red mica, Ephesite. This specimen, from the famous Postmasburg finds on a farm in the early 1980s, has mica books (up to 3 mm across) showing the classic pseudo-hexagonal cross-section of mica.

Formula :
NaLiAl₂[(OH)₂/Al₂Si₂O_10_]
System: triclinic Hardness:3½-4 Rarity:rare
Strunz id:VIII/H.14-20 - SILICATES
Name origin: For Ephesus (Turkey), near where the mineral was originally found.