Gahnita Mineral Data, minerology database

Mineral Reference Lookup for Gahnita

This reference page contains mineralogic data for Gahnita and folklore and metaphysical beliefs. If the mineral is an alternate naming of a more common name, the more common mineral's data is displayed below the list of synonyms.

Minerals matching Gahnita in the database: Gahnita

Mineralogical Reference

Gahnita

Mineral	Gahnita
Synonym	Gahnite

Gahnite (synonym)

Mineral	GAHNITE
Chemistry	ZnAl 2 O 4
Color	Dark blue -Green Yellow brown black
Luster	Vitreous
CrystalSystem	Isometric
CrystalHabits	include the typical octahedron, but can be foundas dodecahedrons and cubes. Octahedrons may be truncated by dodecahedral faces and commonly show striations parallel to the octahedron-dodecahedron boundary.Twinning by the Spinel Twin Law can produce trigonal appearing crystals with three reentrant angles on the sides of the crystal.
Hardness	7½ - 8
Occurences	include Rowe and Charlemont, Massachusetts; Spruce Pine, North Carolina; White Picacho district, Arizona; Topsham, Maineand Franklin New Jersey, USA and Falun, Sweden.
Indicators	crystal habit, color, hardness, densityand locality.
IMAStatus	Approved
Discovered	1807
CellParameters	a = 8.08
OpticalType	Isotropic
Synonyms	Automat Automata Automate Automot Automota Automote Fahlunite (of Karsten) Gahnit Gahnita Gahnite (of von Moll) Zinc-spinel Zinkspinell
TypeLocality	Falu mine Falun Dalarna Sweden
Strunz	4/B.01-40 4 : Oxides & Hydroxides B : Oxides with metal : oxygen = 3:4 (spinel type M3O4 and related)Alumina-Spinels 01 : Spinel groupSpinel - Gahnite series