4.7" Rough Green Prehnite Crystal Mineral Specimen Location Imilchil, Morocco Spinosaurus Tooth an iron- and magnesium-rich silicate

an iron- and magnesium-rich silicate mineral that contributes to their dark appearance and high density

creating its distinctive and attractive appearance used in jewelry and decorative stones

These variations help scientists better understand the ecological niches Elephant Birds occupied and how they interacted with the diverse environments of ancient Madagascar

As a result of this taxonomic review

4.7" Rough Green Prehnite Crystal Mineral Specimen Location Imilchil, Morocco Spinosaurus Tooth an iron- and magnesium-rich silicateLocation: Imilchil, Morocco Weight: 1 Pound 10. 4 Ounces Dimensions: 4. 7 Inches Long, 3. 4 Inches Wide, 2. 3 Inches Thick The item pictured is the one you will receive. Prehnite is a translucent to transparent pale green mineral of the phyllosilicate group, first described in 1788 and named after Dutch military officer Colonel Hendrik von Prehn. Frequently found in association with calcite and epidote, prehnite is most commonly encountered in