You Searched For: Igneous+Rocks

+ward’ssciencewardsci.com800-962-2660 Diabase Type: Igneous; intrusive. Texture/Appearance: Often porphyritic; characterized by an ophitic groundmass where intersecting plagioclase laths are partially or completely enclosed by pyroxene. Massive wi...

+ward’ssciencewardsci.com800-962-2660 Diorite Type: Igneous; intrusive. Texture/Appearance: Massive, generally medium-to-coarse grained; subhedral, equigranular to por- phyritic. Differences in color and grain size are common with orbicular struct...

+ward’ssciencewardsci.com800-962-2660 Anorthoclase (Na, K) AlSi3 O8 (Feldspar Group) Crystallography: Triclinic; 1. Twinning common. Physical Properties: Cleavage: Principle cleavage at right angles or very close to 90°. Fracture uneven; brittle. ...

ward’s sciencewardsci.com800-962-2660 Syenite Type: Igneous; intrusive. Texture/Appearance: Massive; medium to coarse-grained, often changing to pegmatitic. Appears speckled with dark patches, sometimes porphyritic; may show flowage. Color: Pale, ...

+ward’ssciencewardsci.com800-962-2660 Biotite K (Mg, Fe+2)3 (Al, Fe+3) Si3 O10 (OH,F)2 (Mica Group) Crystallography: Monoclinic; 2/m. Usually in irregular foliated masses, and rarely in tabular or short prismatic crystals. Physical Properties: Cle...

+ward’ssciencewardsci.com800-962-2660 Gneiss Type: Metamorphic; regional. Texture/Appearance: Foliated, often with distinct banding (segregation) of minerals; some preferred orientation in micas (platy) or hornblende (prismatic crystals). Medium t...

5100 West Henrietta Rd • PO Box 92912 • Rochester, NY 14692-9012 • p: 800 962-2660 • f: 800 635-8439 • wardsci.com ward's+boreal env.lh.indd 2 12/7/2012 9:34:30 AM Conditions for Ownership Axolotls are restricted in Canada. Under no circumstances ...

+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°, ...

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...

Rock Specimens Discover the widest selection of rock specimens, hand-selected from around the globe for their highly-detailed representation of key structures and features for hands-on study, research, and display. Choose individual specimens, or ...

Geology Specimen Key Cards These helpful guides provide extensive background information for Ward’s Science rocks and minerals. Ideal for supplementing your lessons with additional facts and information, or perfect for take-home study or homework ...

Custom Geology Solutions Custom Geology Solutions For over 150 years, Ward's Science has been supporting geology educators with custom geology specimens to match their teaching needs. Our founder Henry Ward was one of the first to offer custom geo...

+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...

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. An end-user permit is required in ...

+ward’ssciencewardsci.com800-962-2660 Limestone Type: Sedimentary; chemical or clastic. Texture/Appearance: Fine to coarsely crystalline; varieties may be dense, compact and graded to brecciated, styliolitic, or oolitic. Stratification usually ind...

+ward’ssciencewardsci.com800-962-2660 Arkose Type: Sedimentary; clastic. Texture/Appearance: Usually coarse-grained, sometimes with pebbles. Angular to subangular, poorly to moderately well-sorted sand grains. No Fossils. Color: Gray, pink or redd...