Garnet Ledge (Alaska Garnet; Wrangell Garnet), Wrangell, Wrangell Island, Wrangell-Petersburg Borough, Alaska, USA

Fe₃Al₂(SiO₄)₃

Crystal System: cubic
Colour: deep red, brownish red, red-violet or black
Lustre: vitreous, resinous
Habitus: dodecahedra or trapezohedra
Hardness: 7 - 7½
Fracture: sub-conchoidal
Cleavage: none
Density: 4.313 g/cm³ 
Origin and geological occurrence: it belongs to the garnet group. The most common garnet, typically in mica schists and gneisses, from regionally metamorphosed argillaceous sediments and pelites, also in contact metamorphic hornfels. In granites and eclogites, in sedimentary rocks, as a detrital mineral

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Samples:

9A.4 Almandine Reddish equant crystals with mica and amphibole. #Neso soro silicates