You Searched For: Classroom Mineral Specimens

wardsci.com 800-962-2660 Microcline K Al Si3 O8 (Feldspar Group) Crystallography: Triclinic; 1. Crystal habit similar to orthoclase. Usually polysynthetically twinned on both the albite and pericline laws, giving characteristic grating or gridiron...

+ward’ssciencewardsci.com800-962-2660 Schorl (Tourmaline Group) Na Fe3+2 Al6 (BO3)3 Si6 O18 (OH)4 Crystallography: Hexagonal -R; 3m. Usually in prismatic crystals with rounded triangular cross- section due to prominent trigonal prism and subordina...

+ward’ssciencewardsci.com800-962-2660 Staurolite (Fe+2, Mg, Zn)2 Al9 (Si, Al)4 O22 (OH)2 Crystallography: Monoclinic (pseudo-orthorhombic); 2/m. Crystals prismatic with common forms {110}, {001}, and {101}. Cruciform twins very common (at nearly 9...

+ward’ssciencewardsci.com800-962-2660 Oligoclase (Na,Ca) Al (Al,Si) Si2O8 (An10-30) (Feldspar Group) (see also Plagioclase) Crystallography: Triclinic; 1. Crystals usually tabular parallel to {010}; twinning frequent as in albite. Commonly as irre...

+ward’ssciencewardsci.com800-962-2660 Muscovite K Al2 (Si3 Al) O10 (OH, F)2 (Mica Group) Crystallography: Monoclinic; 2/m. Distinct crystals rare; usually tabular with prominent {001}. Usually in lamellar masses or small flakes. Foliated in large ...

+ward’ssciencewardsci.com800-962-2660 Diopside CaMg Si2O6 (Pyroxene Group) Crystallography: Monoclinic; 2/m. Crystals prismatic showing square or 8-sided cross section; also granular, massive. Physical Properties: Cleavage: {110}, at 87° and 93°, ...

+ward’ssciencewardsci.com800-962-2660 Halite NaCl Crystallography: Isometric; 4/m32/m. Cubic habit; other forms very rare. Also massive, granular to compact. Physical Properties: Cleavage: {001} perfect. Fracture conchoidal; rather brittle. Hardne...

+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’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 ...

Annelids Conditions for Customer Ownership (per USDA Permits) 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. •There...

wardsci.com 800-962-2660 Chalcopyrite Cu Fe S2 Crystallography: Tetragonal; 42m. Usually massive; crystals commonly tetrahedral in aspect with the disphenoid. Physical Properties: Cleavage: Indistinct. Fracture uneven; brittle. Hardness: 3.5-4.0. ...

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 Tuff Type: Igneous; extrusive (pyroclastic). Texture/Appearance: Clastic texture with angular rock and mineral fragments and lapilli mixed with fine-grained volcanic ash, partly cemented by sedimentary materia...

Drosophila Drosophila melanogaster is an excellent organism for use in the study of genetics. Its small size, relative ease of mainte- nance, short life cycle, and its ability to produce many offspring have lent it to the demonstration of Mendelia...

+ward’ssciencewardsci.com800-962-2660 Magnetite Fe+2Fe2+3O4 (Spinel Group) Crystallography: Isometric; 4/m32/m. Frequently in octahedral crystals; rarely dodecahedral. Commonly coarse-to fine-grained granular, massive. Physical Properties: Cleavag...

1 All About Elements: Oxygen http://boreal.com boreal.com | 800-387-9393 2 3 Fun Facts About… Oxygen 1. Oxygen constitutes 21% of our atmosphere, nearly half the mass of the earth’s crust and about two thirds of the human body. It is the third mos...