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134 results were found
Malachite
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Malachite Cu2 (CO3) (OH)2 Crystallography:
Monoclinic; 2/m. Rarely in distinct crystals; usually prismatic or fine acicular. Commonly in radiating fibers forming botryoidal or stalactitic masses. Also granular...
Granite
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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...
Pegmatitie
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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...
Working with Nasonia
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Working with
Nasonia
Manual
Working with Nasonia Nasonia vitripennis is a small parasitic wasp that is involved in a symbiotic relationship with a host organism known as Sarcophaga bullata, or a flesh fly. More specifically, Nasonia is a “parasito...
Bytownite
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Bytownite (Ca,Na) Al (Al,Si) Si2O8 (An70-90) (Feldspar) Crystallography:
Triclinic; 1. Crystals usually tabular parallel to {010}; twinning frequent as in albite. Commonly as irregular grains and cleavable masses.
Physical...
Quartz(RockCrystal)
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Quartz (variety Rock Crystal) Si O2 Crystallography:
Hexagonal -R; 32 (low-quartz). Hexagonal; 622 (high quartz). Crystals commonly prismatic, with prism faces horizontally striated and usually terminated by p...
Cinnabar
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Cinnabar HgS Crystallography:
Hexagonal-R; 32 (low temperature form). Crystals usually rhombohedral, often in penetration twins. Commonly fine granular, massive; also earthy.
Physical Properties: Cleavage: {10...
Pyrrhotite
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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 ...
WS Element of Month Neon Boreal final
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All About Elements: Neon
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Boreal’s All About Elements Series Building Real-World Connections to the Building Blocks of Chemistry
The periodic table of elements is an essential part of any chemistry classroom or science...
Quartzite
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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...
Peridotite
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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...
Labradorite
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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...
Bornite
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Bornite (Na,K) AlSi3 O8 (Feldspar Group) Crystallography:
Orthorhombic - dipyramidal (2/m 2/m 2/m) Crystals rare; commonly massive. Physical Properties:
Cleavage: None. Fracture small conchoidal, uneven; britt...
Diopside
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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°, ...
Muscovite
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Muscovite K Al2 (Si3 Al) O10 (OH, F)2 (Mica Group) Crystallography:
Monoclinic; 2/m. Distinct crystals rare; usually tabular with prominent {001}. Usually in lamellar masses or small flakes. Foliated in large ...
WS Element of Month Nitrogen BOREAL Final
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1
All About Elements: Nitrogen
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Fun Facts About… Nitrogen 1. Nitrogen is the fourth most abundant
element in the universe and it makes up the majority of the earth’s atmosphere, at a staggering 78 per...
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