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Porphyry - Madrid
) y se extinguieron en el tardío periodo pérmico (hace 240 m
a much larger number of Strombus species existed
amantes de la paleontología
Add 12 high-quality pieces to your collection
Obsidiana Negra XL Pez fósil Porphyry - MadridRock Class igneous rock Rock Subclass Volcanic (volcanic glass) Origin Hidalgo, Mexico Size Medium: 3. 00 4. 00 cm Large: 4. 00 5. 00 cm Obsidian, or volcanic glass, is molten lava that has cooled rapidly. Its composition is mainly of silicic oxides, being very similar to that of granite or rhyolite. The piece you receive may differ slightly from the photo shown as the rocks are natural and no piece is identical. The size is approximate.
US$ 1382.00
US$ 122.00
US$ 102.50
US$ 343.50
US$ 142.00
