You Searched For: Minerals+and+Rocks+Earth+Science+Models

+ward’ssciencewardsci.com800-962-2660 Quartz (variety Chalcedony) Si O2 Crystallography: Hexagonal -R; 32 (low-quartz). Hexagonal; 622 (high quartz). Cryptocrystalline; massive. Often, mammillary, botryoidal, or stalactitic. Physical Properties: C...

+ward’ssciencewardsci.com800-962-2660 Siltstone Type: Sedimentary; clastic. Texture/Appearance: Silt-sized (<1/16 mm) to very fine sand-sized particles; massive, not laminated (no bedding planes) may exhibit significant clay or sand. Color: Tan, g...

wardsci.com 800-962-2660 Diamond C Crystallography: Isometric; 4/m32/m. Crystals usually octahedral, but can be cubic or dodecahedral; curved faces are frequently observed. Physical Properties: Cleavage: {111} perfect; 4-cleavage directions. Fract...

Conditions for Customer Ownership We hold permits allowing us to transport these organisms. To access permit conditions, click here. Never purchase living specimens without having a disposition strategy in place. A USDA permit is needed to send ea...

wardsci.com 800-962-2660 Limonite FeO • OH • nH2O Crystallography: Not crystallized, a mineral colloid. Usually stalactitic, botryoidal, or mammillary; also fibrous, massive, earthy. Physical Properties: Cleavage: None apparent. Hardness: 5.0-5.5....

wardsci.com 800-962-2660 Graywacke Type: Sedimentary; clastic. Texture/Appearance: Generally coarse-grained with angular to sub-angular, poorly sorted grains in a clayey matrix. May show graded bedding; fossils are rare. Color: Gray to greenish-gr...

+ward’ssciencewardsci.com800-962-2660 Pyrite Fe S2 Crystallography: Isometric; 2/m3. Crystals commonly cubic (often striated) also pyritohedral or octahedral. Frequently massive, granular, sometimes globular, reniform, radiated. Physical Propertie...

wardsci.com 800-962-2660 Illite (K, H3O) (Al, Mg, Fe)2 (Si, Al)4 O10 [(OH)2, H2O] Crystallography: Monoclinic. Crystals not distinguishable; usually in clay-like masses, either compact or friable. Physical Properties: Cleavage: {001} perfect, but ...

Kaolinite Al2 Si2 O5 (OH)4 Crystallography: Triclinic; 1. In very minute, thin, rhombic or hexagonal plates. More commonly in clay-like masses. Physical Properties: Cleavage: {001} perfect; flexible, inelastic. Usually unctuous and plastic. Hardne...

+ward’ssciencewardsci.com800-962-2660 Calcite CaCO3 Crystallography: Hexagonal-R; 32/m. Crystals are extremely varied in habit and can be highly complex. Three important habits include: prismatic, rhombohedral, and scalenohedral. Twinning is also ...

ward’s sciencewardsci.com800-962-2660 Barite BaSO4 (Barite Group) Crystallography: Orthorhombic; 2/m2/m2/m. Crystals usually tabular on {001}; often diamond-shaped. May also be coarsely laminated; granular, earthy. Physical Properties: Cleavage: {...

wardsci.com 800-962-2660 Montmorillonite (Na,Ca)0.3 (Al, Mg)2 Si4 O10 (OH)2 • nH2O Crystallography: Monoclinic. Always in earthy masses; crystals not distinguishable. Physical Properties: Cleavage: None apparent; usually unctuous and plastic. Hard...

+ward’ssciencewardsci.com800-962-2660 Goethite Fe+3 O (OH) (See also Limonite) Crystallography: Orthorhombic; 2/m2/m2/m. Acicular or rarely in distinct prismatic, vertically striated crystals. Also massive, reniform, stalactitic, or in radiating f...

ward’s sciencewardsci.com800-962-2660 Greenstone Type: Metamorphic; regional. Texture/Appearance: Fine-grained, massive or compact; generally non-schistose. Color: Dark, green. Mineralogy/Chemistry: Mainly composed of chlorite, actinolite, epidote...

1 All About Elements: Sodium http://boreal.com 2 boreal.com | 800-387-9393 Boreal’s All About Elements Series Building Real-World Connections to the Building Blocks of Chemistry The periodic table of elements is an essential part of any chemistry ...

+ward’ssciencewardsci.com800-962-2660 Basalt Type: Igneous; extrusive/intrusive. Texture/Appearance: Fine-grained intergranular plagioclase, pyroxene, and oxides; may contain interstitial glass. Structure massive with some vacuoles occurring. Colo...