I found this rock in the Himalayan region in India. It was on the roadside of a hill that we were trekking. It has a silver lustre. It has a hardness of 5.5(I can scratch it with a knife blade).it has small granules (black) but are not very clear.
closed as off-topic by JulPal, Gimelist, trond hansen, daniel.neumann, gansub Feb 6 at 12:04
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You have a metamorphic rock that looks primarily to be a mica schist with possibly a band of gneiss.