You Searched For: Igneous Rocks
40 results were found
Greenstone
/www.boreal.com/images/Greenstone.pdf
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...
Peridotite
/www.boreal.com/images/Peridotite.pdf
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...
Element of Month Lithum Boreal v2
/www.boreal.com/images/Element%20of%20Month_Lithum_Boreal_v2.pdf
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...
Scoria
/www.boreal.com/images/Scoria.pdf
wardsci.com 800-962-2660
Scoria Type:
Igneous; extrusive (volcanic). Texture/Appearance:
Fine-grained to glassy; highly vesicular (>50%). Usually heavier and more crystalline than pumice.
Color: Dark reddish-brown to black.
Mineralogy/Chemistry: B...
Pyrrhotite
/www.boreal.com/images/Pyrrhotite.pdf
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 ...
Marble
/www.boreal.com/images/Marble.pdf
wardsci.com 800-962-2660
Marble Type:
Metamorphic; regional and contact. Texture/Appearance:
Fine to coarse-grained; granoblastic to saccharoidal. May appear patched or with streaks or banding that is deformed.
Color: Variable, commonly white, pin...
Basalt
/www.boreal.com/images/Basalt.pdf
+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...
Schorl
/www.boreal.com/images/Schorl.pdf
+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...
Anorthosite
/www.boreal.com/images/Anorthosite.pdf
+ward’ssciencewardsci.com800-962-2660
Anorthosite Type:
Igneous; intrusive. Texture/Appearance:
Medium to coarse-grained, equigranular with elongated tabular plagioclase. Color:
Dark gray to bluish-gray, sometimes lighter shades. Mineralogy/Chemis...
Element of Month Lithum Boreal
/www.boreal.com/images/Element%20of%20Month_Lithum_Boreal.pdf
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...
Hornblende
/www.boreal.com/images/Hornblende.pdf
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...
Topaz
/www.boreal.com/images/Topaz.pdf
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...
Corundum
/www.boreal.com/images/Corundum.pdf
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...
Pegmatitie
/www.boreal.com/images/Pegmatitie.pdf
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...
Pumice
/www.boreal.com/images/Pumice.pdf
+ward’ssciencewardsci.com800-962-2660
Pumice Type:
Igneous; extrusive (pyroclastic). Texture/Appearance:
Glassy, vesicular, foamy, frothy. Very light-weight with numerous vacuoles (some varieties float in water). A natural glass froth in which the...
Rhyolite
/www.boreal.com/images/Rhyolite.pdf
wardsci.com 800-962-2660
Rhyolite Type:
Igneous; extrusive. Texture/Appearance:
Fine-grained, cryptocrystalline (and glassy) to microcrystalline; often porphyritic. May show flow banding.
Color: Light colored; pink, gray, and purple.
Mineralogy/Ch...
1 - 16 of 40