Complete Clue List
Across
1. Smoky quartz, gemstone, named for Scottish mountains
6. Fossilised tree resin used in jewellery
9. Evaporite mineral, sodium sesquicarbonate dihydrate
10. Iron oxide compound, can be silver to black or reddish tones (Brit)
11. Rocks containing magnetite or goethite perhaps (4,3)
12. Thick liquid residue obtained in distillation of Russian petroleum
13. Turf and its surface soil
14. Calcium, iron and potassium are the most essential __ minerals
16. Transition metal of platinum group, Atomic No 77
18. Part of a circle, or an electrical discharge
19. Highly altered granitic rock
20. Soft silvery-white metal, second element in the lanthanide series
22. Beer barrel
24. The colour of aquamarine (3,4)
26. Intrusive igneous rocks, composition similar to granite
28. Akkadian, the __ of ancient Mesopotamia (3,6)
29. Empire that built a stone city at Cusco, Peru, adj.
30. Clastic silt-sized sediment formed from wind-blown dust
31. Coloured glass grains applied to jewellery, then heated
Down
1. Variety of quartz, usually yellow
2. Essentially rust (4,5)
3. New Zealand crime writer, __ Marsh
4. Natural clay pigments
5. Adj. from Ancient Greek women followers of Dionysus, frenzied
6. Form of silver sulfide Ag2S, named for the Greek for thorn
7. Many houses and other structures are __ of stone
8. Last stable element to be discovered
15. Site of development of the atomic bomb in the 40s (3,6)
17. Foolish, stupid, var.
18. Carbonate mineral, group of rhombohedral carbonates (not the religious recluse)
19. Historically __ was obtained from __ for lighting and heating (3,4)
21. Another term for 7D, implying skilled workmanship
23. Lead glance
25. To confuse
27. French river