what is it, any ideas

[alan p]

. found this rock a few weeks ago,lost it found again. Its off white and has a terracotta reddish coloured covering with more browner crust like covering, the crust covering appears to cover the thicker reddish brown material and also covers the white part, weight 3grm, very faint same colour reddish streak but had to press hard, can make it move only very slightly putting magnet near it but will not stick. I guess it may be quartz but looks more like a dirty very hard chalk or chert I think and the reddish material doesn't add up and no visible metal even though reacts to magnet.

 

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[alan p]

Few more pics to look at, I've tried to get as close a look at the rock as poss with my phone, the pics are a bit blurred but you should be able to see the grey and white mixed rock mineral and fractures where I've filed it, strange looking rock to look at close up and have seen the tiniest bits of metal embedded in the rock, I should also say that the rock is the colour with the coins with the naked eye so greyish and nearly burgundy, hoping its a space rock, also have similar piece in uni museum lab with visible metal in it,

 

[SorenCoins]

Hematite