research-minerals

ward’s sciencewardsci.com800-962-2660 Hornfels Type: Metamorphic, regional. Texture/Appearance: Homogeneous; dense, fine-grained. Granoblastic; may have porphyroblasts or any of the minerals present. Color: Varies; light to dark. May be pink, brow...

PDF

+ward’ssciencewardsci.com800-962-2660 Labradorite (Ca,Na) Al (Al,Si) Si2O8 (An30-70) (Feldspar Group) (see also Plagioclase) Crystallography: Triclinic; 1. Crystals usually tabular parallel to {010}; twinning frequent as in albite. Commonly in irr...

PDF

Everything Science Starts Here! Your definitive source for hands-on science solutions for the classroom. Getting what you need all in one place has never been easier! Get curriculum-aligned products and resources that bring the excitement of scien...

wardsci.com 800-962-2660 Pyrrhotite Fe1-xS (x = 0 - 0.17) Crystallography: Monoclinic; 2/m (below about 250°C). Hexagonal; 6/m3/m2/m for high tempera- ture forms. Crystals rare, usually tabular to platy on {0001}. Also massive, granular. Physical ...

PDF

wardsci.com 800-962-2660 Gypsum CaSO4 • 2H2O Crystallography: Monoclinic; 2/m. Crystals commonly simple in habit; tabular on {010}; diamond- shaped, with edges beveled by {120} and {111}. Twinning common on {100}. Also granular, massive. Physical ...

PDF

+ward’ssciencewardsci.com800-962-2660 Quartzite Type: Metamorphic; regional. Texture/Appearance: Massive, with generally small grain size; sometimes saccharoidal. Grain size (sand size, 1/16-2mm) dependent on original detritus. Generally non-folia...

PDF

+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...

PDF

+ward’ssciencewardsci.com800-962-2660 Sodalite Na8 Al6 Si6 O24 Cl2 Crystallography: Isometric; 43m. Crystals rare, usually dodecahedrons. More commonly massive, granular. Physical Properties: Cleavage: {011} poor. Fracture conchoidal to uneven; br...

PDF

+ward’ssciencewardsci.com800-962-2660 Actinolite Ca2 (Mg, Fe+2)5 Si8O22(OH)2 (Amphibole Group) Crystallography: Monoclinic; 2/m. Crystals usually prismatic; columnar or fibrous. Also massive or granular. Physical Properties: Cleavage: {110} perfec...

PDF

+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...

PDF

+ward’ssciencewardsci.com800-962-2660 Quartz (variety Flint) Si O2 Crystallography: Hexagonal -R; 32 (low-quartz). Hexagonal; 622 (high quartz). cryptocrystalline; massive granular. Physical Properties: Cleavage: Generally none; occasional indisti...

PDF

Mineral Specimens Discover the widest selection of mineral specimens, hand-selected from around the globe for their exquisite detail and noteable features for hands-on study, research, and display. Choose individual specimens, or let us build a co...

+ward’ssciencewardsci.com800-962-2660 Shale Type: Sedimentary; clastic. Texture/Appearance: Very fine-grained (clay to silt-sized particles) grains not distinguishable to the naked eye. A relatively soft rock with fine laminae; may display carbona...

PDF

wardsci.com 800-962-2660 Anthracite Type: Metamorphic; regional. Texture/Appearance: Homogeneous, shiny, hard, scaly and compact. Subconchoidal fractures; glassy looking. Color: Dark brown to black, lustrous. Mineralogy/Chemistry: 92%–98% fixed ca...

PDF

+ward’ssciencewardsci.com800-962-2660 Phlogopite KMg3 Si3 AlO10 (F, OH)2 (Mica Group) Crystallography: Monoclinic; 2/m. Usually in six-sided plates or in tapering prismatic crystals; also in foliated masses. Physical Properties: Cleavage: {001} pe...

PDF

+ward’ssciencewardsci.com800-962-2660 Andesite Type: Igneous; extrusive. Texture/Appearance: Generally fine-grained, aphanitic. Massive structure, often porphyritic with phenocrysts standing out in a vitreous or fine-grained groundmass. Color: Dar...

PDF