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Especie  Familia Araucariaceae Periodo Geológico Eoceno ≈ 35 - 40 m.a. Procedencia Mar Báltico, Lituania Tamaño Pequeño: 2,...

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

Chemical formula Al2O3 : Cr Crystalline system trigonal Class oxides Origin Fort D...

Chemical formula SrSO 4 Crystalline system orthorhombic Class Sulfates Origin M...

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

Chemical formula Sb 2 S 3 1 Crystalline system orthorhombic Class sulphides Orig...

Chemical formula SiO2 _ Crystalline system trigonal Class oxides Origin Rio G...

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

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

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

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

Presentation Wooden box with 20 compartments and transparent methacrylate sliding lid. informative label Name, Classifi...

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

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

Chemical formula Cu(SO 4 ) 5H 2 O Crystalline system triclinic Class Sulfates Origin ...

Chemical formula NaAlSi 3 OR 8 Crystalline system triclinic Class silicates Origi...

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

Chemical formula CaSO 4 ·2H 2 O Crystalline system monoclinic Class Sulfates Origin...

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

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

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

Species Otodus Obliquus Geological Period Eocene ≈ 45-55 ma Origin Oued Zem, Khouribga, Morocco Size ...

Fórmula química SiO2 Sistema Cristalino Trigonal Clase Óxidos Procedencia Rio Grande Do Sul, Brasil Tamaño 2,0-3,0 cm...

Chemical formula KAl(SO 4 ) 2 ·12H 2 O Crystalline system Cubic Class Sulfates ...

Chemical formula Al 2 OSiO 4 Crystalline system orthorhombic Class Silicate Origi...

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

Chemical formula CaSO 4 ·2H 2 O Crystalline system monoclinic Class Sulfates Origi...

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

Chemical formula Cu2CO3 ( OH ) 2 _ Crystalline system monoclinic Class carbonates ...

Chemical formula CaCO 3 Crystalline system rhombohedral Class carbonates Origin E...

Chemical formula Na 8 Al 6 Si 6 O 24 Cl 2 Crystalline system Cubic Class silicates ...

Chemical formula SiO2 _ Crystalline system Hexagonal, Trigonal Class silicates ...

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

This book is a basic pocket Guide to learn to differentiate Minerals, Rocks and Precious Stones. As a beginner's guide, it exposes the basic cha...