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Andradite, (var. Melanite)

Midelt Prov.
Draa-Tafilalet Reg.
Size: 3.1x2.5x3.4 cm
Largest crystal size: 20mm mm


Here is a cluster of andradite garnets with smaller crystals surrounding the base of one larger, sharper, 20mm crystal. The large crystal is a dodecahedron with trapezohedral modifications. This particular specimen has a much more velvety luster than other examples we've seen. When examined under the microscope, light-coloured internal fractures can be seen that expose the colour and translucency of the, seemingly, opaque crystals.
This is an example of one of three types of andradite garnet, namely the variety Melanite, named after the Greek word "melanos", meaning black, due to the presence of Titanium. These interpenetrating dodecahedral crystals occur in skarns in contact metamorphosed, impure limestones. The matrix is composed of massive albite, a plagioclase feldspar mineral. From the famous Draa-Tafilalet region of Morocco.


All prices in Canadian dollars. For payment in US$, deduct 25% or multiply by 0.75.

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