This is pure bluish grey/black elemental silicon. There will be the odd larger lump in this but it is mostly quite fine and somewhat dusty. The melting point of this semi-metal/metalloid is 1410 degrees c and it has a density of 2.336.
Any questions please feel free to ask. and note the photos are stock photos of my actual stock and your sample may vary slightly.
Note that Silicon is irritating to eyes and skin, always wear a mask/respirator, gloves and goggles and take care when handling, please store safely away from kids etc. too.
Please note free shipping is to Australian addresses only, we are happy to quote for shipping anywhere in the world.