56 Mining Ne w Opportunities Le ar n i ng A ct iv it y 32 What R ocks Miner als and Metals ar e in a C omputer Ans wer She et 1 of 1 Com puter S c re en S ilic on B or on L e ad Indium S tr on tium B ar ium P ho sphor us Com puter C hip S ilic on G allium Com puter C a s e C alc ium c ar b ona t e T alc Cla ys S ulf ur Mic a Com puter Ci rc u itr y G old Copp er Alumin um S t e e l L it hium T ung st en Chr omium T it anium S ilver Cobalt Nic k e l G er manium G allium T in L e ad T an t alum Z inc Phone L i ne Copp er