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Science Olympiad SES- Rock Hounds

Rocks and Mineral Classification
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Metamorphic
A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions
Sedimentary
A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together.
Igneous
A type of rock that forms from the cooling of molten rock at or below the surface
Quartz-Crystal
a hard glossy mineral consisting of silicon dioxide in crystal form #7 on the Mohs Scale
Talc
Grayish Brown, White Streak, Silicate, Resist heat, electricity, acid, waxy, hardness of 1, softest mineral
Shale
A fine-grained sedimentary rock (grains finer than 1/16 millimeter in diameter) formed by the cementation of silt and clay (mud). Has thin layers (laminations) and an ability to split (fissility) into small chips.
Basalt
A dark, dense, igneous rock with a fine texture, found in oceanic crust
Granite
A usually light-colored rock that is found in continental crust., A usually light colored igneous rock that is found in continental crust, is the most abundant intrusive rock, and forms the core of many mountain ranges
Pumice
A type of igneous rock that contains air bubbles
Scoria
A volcanic rock containing many holes- Igneous
Bituminous Coal
The most common form of coal; produces a high amount of heat and is used extensively by electric power plants. Softer, more sulfur- Sedimentary
Limestone
A sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals.
Quartzite
Formed from a parent rock of quartz-rich sandstone; Quartz grains are fused together-Metamorphic
Conglomerate Rock
a sedimentary rock made from smalled rounded stones that have been cemented together
Marble
Coarse, crystalline; Parent rock was limestone or dolostone; Composed essentially of calcite or dolomite crystals; Used as a decorative and monument stone; Exhibits a variety of colors- Metamorphic
Sandstone
A sedimentary rock formed by cementing grains of sand over time.
Slate
Metamorphic, layered foliation, hard, preexisting parent rock is shale
Gneiss
A rock: Metamorphic, foliated, medium to coarse grained texture, has light and dark bands, wide range of parent rocks.
Obsidian
A usually black or banded, hard volcanic glass that displays shiny, curved surfaces when fractured and is formed by rapid cooling of lava-Igneous, very glossy
Garnet
NM. H = 7. Streak: White. Color usually, red, black, or brown. Sometimes yellow, green, pink. Forms dodecahedrons. Cleavage absent but may have parting. Brittle, translucent to opaque.- Metamorphic
Calcite
Looks almost like fluorite and can be any color, but it's a little softer and it has a more rhombus like shape. DISSOLVES IN HCI ACID.- Number 2 on the Mohs Scale
Galena
Dark gray; metallic luster; Dark gray streak; Hardness: 2.5; Isometric crystal
Hematite
Black and shiny, dark gray and dull, or rusty red, almost always cool to the touch, streak is cherry-red
Quartz-Chert
A mineral found in sand, it is used for making glass as well as electronic equipment and watches.
Copper
A common reddish metallic element that is ductile and malleable and one of the best conductor of heat and electricity-Turns green when misted for a while
Graphite
black carbon used for drawing or writing
Mica-Biotite
(top black piece)
Feldspar
any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium
Gypsum
A mineral used in the formation of Plaster of Paris and stone.
Pyrite
An oxygen deficient environment may be indicated by the presence of the following mineral...- Somtimes known as "fools gold"
Flourite
Almost any color, a little harder than calcite, usually has dipyramidal or cubic structure. Fluorescent.
Halite
Cubic crystal, salty taste, dissolves in water
Kaolinite
Looks like chalk but is actually clay