www.mineralgallery.co.za Minerals A-E Effenbergerite
Name	Effenbergerite
Chemistry	BaCuSi4O10
Uses	as a collectors item
Color-	Dark lazulite blue
Hardness	4.5
Specific gravity	3.54
Crystal system:	monoclinic(pseudorhombic)
Crystal form:	Platy - Sheet forms (e.g. micas).
Accompanied by:	Braunite, sugilite, and hausmannite
Fracture	Brittle - Generally displayed by glasses and most non-metallic minerals
Luster	Vitreous - Resinous
Cleavage	good on(110), imperfect on (001)
Streak	Light Blue
Similar to:	Richterite
Effenbergerite is a type locality of Wessels mine. Thus very rare. Found nowhere else. Described in 1994 In a matrix consisting primarily of braunite, sugilite, and hausmannite, cut by pectolite veinlets. Ba-analog to cuprorivaite and Cu-analog to gillespite Found at : Central-eastern orebody of the Wessels mine, Kalahari Manganese Field, NW Cape Province, Republic of South Africa Named after : Named after Dr. Herta S. Effenberger, mineralogist and crystallographer of the University of Vienna. It was found with fibrous pectolite veins that cross-cut massive sugilite.

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