Clach ghealach rionnag dhubh
Clach-ghealach rionnag dubh Clach ghealach rionnag dubh a ’ciallachadh agus feartan Is e clach-ghealach rionnag dubh silicate sodium potasium aluminium leis an fhoirmle cheimigeach ... Leugh Tuilleadh
Black Tourmaline
Tha tourmaline dubh Tourmaline na mhèinnear braton silicate criostalach. Is e cuid de na h-eileamaidean lorg aluminium, iarainn, cuideachd magnesium, sodium, lithium, no potasium. Tourmaline ... Leugh Tuilleadh