You Searched For: Igneous+Rocks

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...

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...

1 All About Elements: Lithium https://boreal.com/store/ boreal.com | 800-387-9393 2 3 Fun Facts About… Lithium 1. Elemental Lithium can float in mineral oil! 2. Lithium was one of the elements produced during Big Bang Nucleosynthesis. The other tw...

wardsci.com 800-962-2660 Granite Type: Igneous, intrusive. Texture/Appearance: Massive, medium to coarse-grained; holocrystalline, sometimes porphyritic. Color: White, light gray, pink, or red. Mineralogy/Chemistry: Felsic; composed primarily of q...

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...

wardsci.com 800-962-2660 Hornblende (Ca,Na)2-3 (Mg,Fe,Al)5 SI6 (Si,Al)2 O22 (OH)2 (Amphibole Group) Crystallography: Monoclinic: 2/m. Crystals prismatic usually terminated by {011}. May be columnar to fibrous; coarse-to fine-granular. Physical Pro...

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...

+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 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...

+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...

1 All About Elements: Lithium https://boreal.com/store/ boreal.com | 800-387-9393 2 3 Fun Facts About… Lithium 1. Elemental Lithium can float in mineral oil! 2. Lithium was one of the elements produced during Big Bang Nucleosynthesis. The other tw...

wardsci.com 800-962-2660 Pegmatite Type: Igneous; intrusive. Texture/Appearance: Very coarse-grained, marked by intergrowth of large (up to 1 cm) crystals. In some instances, individual crystals may grow up to several feet. Color: Varies; mostly l...

ward’s sciencewardsci.com800-962-2660 Corundum Al2O3 Crystallography: Hexagonal-R; 32/m. Crystals commonly tabular on {0001} or prismatic {1120}; often rude barrel-shaped crystals. Usually massive; coarse or fine granular. Physical Properties: Cle...

wardsci.com 800-962-2660 Sphalerite (Zn,Fe) S Crystallography: Isometric; 43m. Crystals usually tetrahedral or dodecahedral and often distorted and complex; rough, curved faces common. Usually in cleavable masses, coarse to fine granular. Physical...

+ward’ssciencewardsci.com800-962-2660 Ilmenite Fe+2 Ti O3 Crystallography: Hexagonal-R; 3. Crystals usually thick tabular with prominent basal planes and small rhombohedral truncations. Commonly in thin plates, massive or compact; also in grains o...

+ward’ssciencewardsci.com800-962-2660 Anorthite CaAl2Si2O8(An90-100) (Feldspar Group) (see also Plagioclase) Crystallography: Triclinic; 1. Crystals usually prismatic parallel to c-axis; twinning as in albite. Commonly massive, cleavable, with gra...