Telluric iron

Telluric iron
Sawed slab of basalt with bright, metallic native-iron inclusions from Uivfaq, Disko Island (specimen size: 7.8 cm × 3.5 cm × 0.6 cm (3.07 in × 1.38 in × 0.24 in))
General
Category	Native element mineral
Formula (repeating unit)	Fe
Strunz classification	1.AE.05
Dana classification	1.1.17.1
Crystal system	Cubic
Crystal class	Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m)
Space group	Im3m
Unit cell	a = 2.8664 Å; Z = 2
Identification
Color	Steel-gray to iron-black, white in polished section
Crystal habit	Massive, as interstitial blebs, rare as crystals
Twinning	On {111} and on {112}
Cleavage	{001}; with parting on {112}
Fracture	Hackly
Tenacity	Malleable
Mohs scale hardness	4
Luster	Metallic
Diaphaneity	Opaque
Specific gravity	7.3–7.87
References	[1][2][3]

Telluric iron, also called native iron, is iron that originated on Earth, and is found in a metallic form rather than as an ore. Telluric iron is extremely rare, with only one known major deposit in the world, located in Greenland.