Science Olympiad SES- Rock Hounds

Mica-Biotite

(top black piece)

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

Basalt

A dark, dense, igneous rock with a fine texture, found in oceanic crust

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.

Quartz-Chert

A mineral found in sand, it is used for making glass as well as electronic equipment and watches.

Gypsum

A mineral used in the formation of Plaster of Paris and stone.

Gneiss

A rock: Metamorphic, foliated, medium to coarse grained texture, has light and dark bands, wide range of parent rocks.

Limestone

A sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals.

Sandstone

A sedimentary rock formed by cementing grains of sand over time.

Pumice

A type of igneous rock that contains air bubbles

Metamorphic

A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions

Igneous

A type of rock that forms from the cooling of molten rock at or below the surface

Sedimentary

A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together.

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

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

Scoria

A volcanic rock containing many holes- Igneous

Flourite

Almost any color, a little harder than calcite, usually has dipyramidal or cubic structure. Fluorescent.

Pyrite

An oxygen deficient environment may be indicated by the presence of the following mineral...- Somtimes known as "fools gold"

Hematite

Black and shiny, dark gray and dull, or rusty red, almost always cool to the touch, streak is cherry-red

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

Halite

Cubic crystal, salty taste, dissolves in water

Galena

Dark gray; metallic luster; Dark gray streak; Hardness: 2.5; Isometric crystal

Quartzite

Formed from a parent rock of quartz-rich sandstone; Quartz grains are fused together-Metamorphic

Talc

Grayish Brown, White Streak, Silicate, Resist heat, electricity, acid, waxy, hardness of 1, softest mineral

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

Kaolinite

Looks like chalk but is actually clay

Slate

Metamorphic, layered foliation, hard, preexisting parent rock is shale

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

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

Quartz-Crystal

a hard glossy mineral consisting of silicon dioxide in crystal form #7 on the Mohs Scale

Conglomerate Rock

a sedimentary rock made from smalled rounded stones that have been cemented together

Feldspar

any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium

Graphite

black carbon used for drawing or writing