1 Raw iron is found in earthâs crust, as an ore. 2  Iron ore mostly found as Fe 2 O 3 (the form of iron oxide found as the mineral hematite).
A US quarter struck in 1964 or 1965 (dated 1965) and later weighs about 5.67 grams. A US quarter struck between 1930 and 1964 weighed 6.25 grams. This would make a roll of qâ¦uarters, or 40 quarters, weigh between 226.8 grams and 250 grams. This is about half a pound for the lower figure and almost 1 ounce more for the higher figure.
Mass / Weight: 6.25 grams. What this coin looks like (obverse, reverse, mint mark location, special features, etc.): There was a major Doubled Die Obverse (DDO) error on some 1937 Washington Quarters. This is best identified by the strong doubling of the words IN GOD WE TRUST. The 1937 date is also slightly doubled as well. An example image of this coin is depicted above.