Interesting Geology found at Huqf; all these were within a couple of metres of each other. This is where I wish my knowledge of the subject was more than non-existent……….
Very frustrating !
The yellow/orange had a very sulphurous smell and the dark red/brown was powdery and stained the fingers.
This one and the above seemed to be Iron ore ?
Unusual (For me anyway) crystal formations that were very heavy for their size.
David A Lockwood 
There is something very abstract about these shots – that first one in particular. Abstract is good:)
Thanks because in some ways I took them more for interest. But yes they do seem to have an abstract appeal.
David.
The crystals are beautiful. Cool!
Yes and they have the weight of good quality Lead Crystal, found a pyramid shaped piece that I will use as a paper-weight.
I should have got all technical and used a coin for size 🙂 but these are about 5cm from end to end and 3 to 4 mm thick.
David.
Fascinating images.
Thanks – very interesting area; as an aside, it has some of the earliest human habitation in this part of the Arabian peninsular.
David.