3.6" Rough Green Nontronite Mineral Specimen Jove Lauriano Minas Gerais Brazil Toe Its hardness on the Mohs

Its hardness on the Mohs scale ranges from 5

Their robust structure has allowed researchers to successfully recover ancient DNA

This transformation commonly takes place in phosphate-rich environments

Its massive upturned jaws

3.6" Rough Green Nontronite Mineral Specimen Jove Lauriano Minas Gerais Brazil Toe Its hardness on the MohsLocation: Jove Lauriano Claim, Minas Gerais, Brazil Weight: 6. 5 Ounces Dimensions: 3. 6 Inches long, 2. 8 Inches Wide, 2. 1 Inches Thick The Item pictured is the one you will receive. Nontronite, a striking clay mineral from the smectite family alongside montmorillonite and saponite, owes its name to the town of Nontron in France, where it was first uncovered. This bold green mineral thrives in low grade metamorphic rocks, hydrothermal zones, and