Has Vanna White ever tripped? Who is the lady on Wheel of Fortune who seems to be pretending to be Vanna? Does Vanna White ever wear the same dress more than once on the Wheel of Fortune? How much money could a game make if it made it to network TV on prime time, say 8pm ET after Jeopardy! and Wheel of Fortune?
Among minerals of economic importance, carbon minerals hold the unique position of being at the same time of the most common and the most rare occurrence.
Graphite is a mineral composed exclusively of the element carbon. Graphite has the same chemical composition as Diamond, which is also pure carbon, but the molecular structure of Graphite and Diamond is entirely different. This causes almost opposite characteristics in their physical properties. Graphite is rather common mineral, but fine crystals are rare. Most Graphite mining areas produce enormous quantities from a single or several large Graphite vein s, but collector specimens in good crystals are not commonly encountered.