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25" x 2" and weighs 5
75" x 2" and weighs 3
They are made of red mudstone and siltstone and can contain minerals like quartz
Gold is commonly found as disseminated grains in quartz veins with pyrite and other sulphides
are fused silica (quartz) with a rough
Franklinite | Franklin, NJ Large 25" x 2" and weighsFranklinite is a dense, black, metallic zinc iron manganese oxide mineral belonging to the spinel group. Found in Franklin and Sterling Hill, New Jersey, it is now the official state mineral of New Jersey. It typically forms octahedral crystals, is weakly to moderately magnetic and has a Mohs hardness of 5. 56. 5. These specimen fluoresce beautifully under blacklight, making them incredibly unique! This item is 2. 5 x 2 x 2 and weighs 9. 05 oz
