Minerals and Rocks Learning Activities

+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...

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wardsci.com 800-962-2660 Topaz Al2SiO4 (F,OH)2 Crystallography: Orthorhombic; 2/m2/m2/m. Crystals commonly prismatic with vertical prism faces often striated; also in crystalline masses or granular. Physical Properties: Cleavage: {001} perfect. Fr...

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+ward’ssciencewardsci.com800-962-2660 Apatite Ca5(PO4)3(F,Cl,OH) Crystallography: Hexagonal; 6/m. Commonly occurs in crystals of long prismatic habit; also in mas- sive to compact masses. Physical Properties: Cleavage: {0001} poor. Fracture concho...

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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 ...

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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 ...

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+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...

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wardsci.com 800-962-2660 Peridotite Type: Igneous; intrusive. Texture/Appearance: Medium to coarse-grained; massive, granular, sometimes porphyritic. Color: Medium gray to greenish-gray. Mineralogy/Chemistry: Ultramafic, with mafic minerals greate...

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+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...

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wardsci.com 800-962-2660 Slate Type: Metamorphic; regional. Texture/Appearance: Fine-grained; lacks mineral segregation banding, displays rock cleavage in one direction. Surface may appear somewhat smooth and shiny. Color: Various, including dark ...

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wardsci.com 800-962-2660 Chromite Fe+2 Cr2 O4 (Spinel Group) Crystallography: Isometric; 4/m32/m. Habit octahedral but crystals small and rare; most often granular to compact; massive. Physical Properties: Cleavage: None. Fracture uneven; brittle....

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wardsci.com 800-962-2660 Talc Mg3 Si4 O10 (OH)2 Crystallography: Monoclinic; 2/m. Rarely in crystals; more often in foliated masses or compact fine- grained aggregates. Compact and massive varieties known as steatite or soapstone. Physical Propert...

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Almandine Fe3+2 Al2 (SiO4)3 (Garnet Group) Crystallography: Isometric; 4/m32/m. common forms are dodecahedron and trapezohedron. Also massive, granular. Physical Properties: Cleavage: Not prominent; {110} parting sometimes distinct. Fracture subco...

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wardsci.com 800-962-2660 Forsterite Mg2 Si O4 (Olivine Group) Crystallography: Orthorhombic; 2/m2/m2/m. Rarely in small equidimensional or tabular crystals; usually in granular masses and as rounded grains. Physical Properties: Cleavage: {101} ind...

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ward’s sciencewardsci.com800-962-2660 Gabbro Type: Igneous; intrusive. Texture/Appearance: Granular; medium-grained. Color: Dark, medium gray, green-gray or brownish-gray. Mineralogy/Chemistry: Mafic; with essential plagioclase (50%-75%) and pyrox...

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Page 1 Spotted Salamander Species: maculatum Genus: Ambystoma Family: Ambystomatiidae OOrder: Caudata Class: Amphibia Phylum: Chordata Kingdom: Animalia Conditions for Customer Ownership We are a USDA compliant facility and hold all necessary perm...

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