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Chemical formula (Mn 3+ , Fe 3+ )PO 4 Crystalline system orthorhombic Class phosphate...

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

Fórmula química SiO2 Sistema Cristalino Trigonal Clase Óxidos Procedencia Rio Grande Do Sul, Brasil Tamaño 3,0-4,0 cm...

Rock Class Igneous Rock Rock Subclass Volcanic (volcanic glass) Origin Hidalgo, Mexico Size ...

Chemical formula S Crystalline system Rhombic, Monoclinic Class Minerals Elements O...

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

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

Chemical formula (Ca,Fe,Mg,Mn) 3 (Al, Fe, Mn,Cr,Ti,V) 2 (SiO 4 ) 3 Crystalline system isometric ...

Rock Class metamorphic rock Rock Subclass contact metamorphism Origin Sar E Sang, Badakhshan, Afghanistan ...

Rock Class metamorphic rock Rock Subclass contact metamorphism Origin Sar-E-Sang, Afghanistan Size 2.0-...

Chemical formula Na(Al,Fe 3+ )Si 2 O 6 Crystalline system monoclinic Class silicates...

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

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

Chemical formula Fe 2+ Fe 3+ 2 O 4 Crystalline System Isometric Class Oxides ...

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

Species Spinosaurus sp. Geological Period Cretaceous Cenomanian ≈ 100.5 - 93.9 ma Origin Kem Kem, Taouz, Moroc...

Chemical formula Cu3 ( CO3 ) 2 (OH) 2 Crystalline system monoclinic Class carbonates ...

Chemical formula At 2 or 3 Crystalline system Hexagonal Class oxides Origin ...

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

Chemical formula KAlSi 3 OR 8 Crystalline system monoclinic Class silicates Origin...

Chemical formula FeS 2 Crystalline system Cubic Class sulphides Origin Navajun, La R...

Rock Class Sedimentary rock Rock Subclass Evaporitic sedimentary Origin Sonora, Mexico Size 2.0-3.0cm ...

Chemical formula CaCO 3 Crystalline system orthorhombic Class carbonates Origin Tic...

Chemical formula Mg 3 Si 4 O 10 (OH) 2 Crystalline system monoclinics Class silicate...

Chemical formula SiO2 _ Crystalline system Hexagonal / Trigonal Class oxides ...

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

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

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

Chemical formula NaCl Crystalline system Cubic Class halides Origin Whirlpools, Za...

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

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

Set of 10 self-assembling die-cut Cardboard boxes of 6 x 6 cm. Classic die-cut cardboard boxes to keep your minerals, fossils and rocks in order....

Chemical formula Ca 5 (PO 4 ) 3 (F,OH,Cl) Crystalline system Hexagonal Class phosphates ...

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

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

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