What mineral was actually in the ore Frobisher found?
Quartz
Pyrite
Hornblende
Galena
Answer
Hornblende, a common rock-forming mineral, was the actual mineral found in the ore discovered by Frobisher. This dark, amphibole mineral is composed of calcium, magnesium, iron, and aluminum silicates. Despite Frobisher's initial belief that he had found gold, the ore he brought back from his expeditions was later determined to be primarily hornblende, a relatively abundant and less valuable mineral.
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