13 - Axinite-(Fe)

ID	13
Mineral	Axinite-(Fe)
Location	Tuscany - Italy
Fluorescence	LW-UV: close SW-UV: close
Mindat.org	View Axinite-(Fe) information at mindat.org

ID	1459
Long ID	1:1:1459:1
Formula	`Ca₄Fe²⁺₂Al₄[B₂Si₈O₃₀](OH)₂`
IMA Status	0 1
Other Occurrences	Low to high grade regionally metamorphosed rocks, contact metamorphic rocks, pegmatites.
Diapheny	Transparent,Translucent
Cleavage	Good on {100} Poor on {001} {110} {011}
Tenacity	brittle
Colour	Brown, clove-brown, plum blue, pearl gray
Hardness (min)	6.5
Hardness (max)	7.0
About the name	Originally named Espéce de Schorl by Johann Gottfried Schreiber in 1781. Named Schorl violet and Schorl transparent lenticulaire by Romé de L'Isle in 1785. Named Thumerstein by Abraham Gottlob Werner in 1788, later spelled Thumite. Named Yanolite by Jean Claude de la Métherie in 1792. Named Glasschörl by Blumenberg in 1799 (also glasstein). Named axinit in 1797 by Rene Just Haüy from the Greek αξίνα ("axina") for "axe", in allusion to the common habit of its crystals. Renamed ferroaxinite by Waldemar T. Schaller in 1909 for iron dominance in the formula. Renamed with suffix "-(Fe)" by IMA in 2007.
Streak	White
Crystal System	Triclinic
Cleavage Type	Distinct/Good
Fracture type	Irregular/Uneven,Conchoidal
Morphology	Flattened, axe head shaped, granular, massive
key_elements	0
shortcode_ima	Ax-Fe
Group	Axinite Group

Axinite-(Fe)