Strange Rock Found On Mars?

[daver]

BBC News - Nasa's Curiosity rover finds 'unusual rock'

How come this is an almost perfect Pyramid shape?
Anyone know where there are larger images to view please?
Cheers,
Dave

 

[Darby]

BBC News - Nasa's Curiosity rover finds 'unusual rock'

How come this is an almost perfect Pyramid shape?
Anyone know where there are larger images to view please?
Cheers,
Dave

Its a feldspar. That's now it should cleave - right angles.

 

[daver]

Its a feldspar. That's now it should cleave - right angles.

Thanks Derby!
There is such an interesting article right here:

BBC News - Cosmic coincidence on the road to Glenelg