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Chemical formula CuFes 2 Crystalline system tetragonal, scalenohedral Class sulphides ...

Chemical formula KAlSi 3 OR 8 Crystalline system Monoclinic/Triclinic Class silicat...

Presentation Wooden box with 30 compartments and transparent methacrylate sliding lid. Information label Name, Classifica...

Chemical formula (Mg 2 Al 2 )Si 8 O 2 0(OH) 2 ·4H 2 O Crystalline system monoclinic Class ...

Chemical formula Fe 2+ Ti 4+ O 3 Crystalline system trigonal Class oxides Origin I...

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

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

Chemical formula CO3 (Ca,Mn) Crystalline system trigonal Class carbonates Origin ...

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

Species Flexicalymene Ouzregui sp. Geological Period Late Ordovician ≈ 449-443.7 ma Origin Erfoud,...

Chemical formula (Fe,Mn,Mg)WO 4 Crystalline system monoclinic Class oxides Origin...

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

Fórmula química LiAl(SiO3)2 Sistema Cristalino Monoclínico Clase Silicatos Procedencia Kunar, Afganistán Tamaño 3,0-4...

Chemical formula CaMg(CO 3 ) 2 Crystalline system trigonal Class carbonates Origin ...

Chemical formula Ace 4 S 4 Crystalline system monoclinic Class sulphides Origin ...

Chemical formula ZnS Crystalline system Cubic Class sulphides Origin Madan, Bulgar...

Chemical formula Ca 2 SiB 5 O 9 (OH) 5 Crystalline system monoclinic Class borates ...

Chemical formula CaCO 3 Crystalline system rhombohedral Class carbonates Ori...

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

Species Ammonite Cleoniceras sp. Geological Period Lower Albian Cretaceous ≈ 100.5 ma Origin Mahajanga, Mada...

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 (Cu,Al) 4 H 4 (OH) 8 Si 4 O 10 nH 2 O Crystalline system orthorhombic Cl...

Chemical formula Ca 2 Al 3 (SiO 4 ) 3 (OH) Crystalline system Rhombic Class Silic...

Species Family Araucariaceae Geological Period Oligocene ≈ 23 Ma Origin Sumatra, Indonesia ...

Presentation Wooden box with 30 compartments and transparent methacrylate sliding lid. Information label Name, Classifica...

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. ...

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

Fórmula química CaF2 Sistema Cristalino Cúbico, Octaedro, Rombododecaedro Clase Halogenuros Procedencia Tafilalet, Marru...

Chemical formula SiO2 _ Crystalline system Amorphous Class oxides Origin Mooka...

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

Chemical formula Ca 4 (Mn 2 + , Fe 2 + , Mg) 2 Al 4 (B 2 Si 8 O 30 ) (OH) 2 Crystalline System Tr...

Chemical formula ZrSiO4 _ Crystalline system tetragonal Class silicates Origin...

Chemical formula FeS 2 Crystalline system Cubic Class sulphides Origin Huanzala, Pe...

Chemical formula K(Al,Cr) 2 AlSi 3 O 10 (OH,F) 2 Crystalline system monoclinic Class ...

Composición SiO₂ Clase Pseudo-tectita Sistema cristalino Amorfo Procedencia Cárpatos, Eslovaquia Tamaño 1,50 - 2,50 cm ...