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Chemical formula SiO 2 Crystalline System Trigonal, Hexagonal Class Oxides ...

Chemical formula LiAlPO4F Crystalline system triclinic Class phosphates Orig...

Chemical formula SiO2 _ Crystalline system trigonal Class oxides Origin Midelt...

Chemical formula SiO2 • nH2O Crystalline system Amorphous Class Silicates - Mineraloid ...

Species Family Belemnoidea Geological Period Jurassic ≈ 180 ma Origin Peniche, Portugal ...

Species Fusus Burdigalensis Geological Period Miocene ≈ 20 ma Origin Bordeaux, France S...

Chemical formula Faith 2 OR 3 Crystalline system trigonal Class oxides Origin N...

Rock Class Sedimentary rock Rock Subclass Chemical and Organogenic Origin Olot, Girona Size 2.0-3.0cm ...

Set of 10 12.7 x 12.7 cm die-cut cardboard self-assembling boxes. Die-cut cardboard boxes ideal for organizing your minerals, fossils and rocks. ...

Practical metal magnifying glass with 40x magnification, of scientific quality. The magnifying glass is foldable to protect the glass and is an op...

Presentation Green poplar wood box with transparent methacrylate sliding lid. Information label Name and Origin ...

Presentation Green poplar wood box with transparent methacrylate sliding lid. Information label Name and Origin ...

Species Heliophora Orbicularis Geological Period Pliocene ≈ 5.3 - 1.8 ma Origin Western Sahara , Mauritania ...

Chemical formula CaF 2 Crystalline system Cubic, Octahedron, Rhombododecahedron Class ...

Chemical formula SiO2 _ Crystalline system trigonal, hexagonal Class oxides Ori...

Chemical formula (Mn 2+ )SiO 3 Crystalline system triclinic Class silicates Origin...

Fórmula química FeAsS Sistema Cristalino Monoclínico Clase Sulfuros Procedencia Panasqueira, Portugal Tamaño 2,0-3,0 cm...

Rock Class igneous rock Rock Subclass Volcanic (volcanic glass) Origin Hidalgo, Mexico Size Medium:...

Chemical formula FeO(OH) nH2O Crystalline system Amorphous Class oxides Origin ...

Chemical formula KFe 3+ 3 (SO 4 ) 2 (OH) 6 Crystalline system trigonal Class Sulfates ...

Chemical formula (Na,Ca)(Al,Fe,Li)(Al,Mg,Mn) 6 (BO 3 ) 3 (Si 6 O 18 ).(OH,F) 4 Crystalline system trigonal...

Chemical formula Mg 3 Si 4 O 10 (OH) 2 Crystalline System Monoclinics Class ...

Fórmula química Mineral sintético Sistema Cristalino Amorfo Clase Óxidos Procedencia Minas Gerais, Brasil Tamaño Media...

Chemical formula (Mn 2+ )SiO 3 Crystalline System Tetragonal Class Oxides ...

Chemical formula SiO 2 •nH 2 O Crystalline System Amorphous Class Silicates - Miner...

Chemical formula SiO 2 Crystalline System Hexagonal, Trigonal Class Silic...

Chemical formula Faith 2 Or 3 Crystalline System Trigonal Class Oxides O...

Chemical formula SiO 2 Crystalline System Hexagonal/Trigonal Class Oxides ...

Chemical formula SiO 2 Crystalline System Trigonal Class Oxides Or...

Chemical formula CaCO₃ Crystalline system rhombohedral Class carbonates Origin Madr...

Chemical formula Al 2 OSiO 5 Crystalline system orthorhombic Class Silicate Or...

Especie Atlasaurus imelakei Periodo Geológico Jurásico ≈ 165 m.a. Procedencia Boulemane, Marruecos Tamaño 4,0 - 6,0 cm Hueso...

Especie  Mosasaurus sp. Periodo Geológico  Cretácico Superior ≈ 70 - 66 m.a. Procedencia  Kem Kem, Taouz, Marruecos Tamaño Dient...

Species Heliophora Orbicularis Geological Period Pliocene ≈ 5.3 - 1.8 ma Origin Western Sahara , Mauritania ...

Species Trigonia sp. Geological Period Jurassic ≈ 180 ma Origin Peniche, Portugal Size ...

Species Tylostoma sp. Geological Period Lower Cretaceous ≈ 100-146 ma Origin Levante, Spain ...