regents minerals

Mineral physical characteristics depend on their (external, internal) arrangement of atoms.

• external

• internal

Color, streak, luster, hardness, cleavage, crystal form = (physical, chemical) properties of minerals

• physical

• chemical

Tags

NGSS.MS-PS1-4

Moh’s hardness scale 1 (soft, hard) to 10 (soft, hard); higher numbers (can, can’t) scratch lower numbers; hardness of glass (1, 5.5, 10)

• soft, hard, can, 1

• soft, hard, can't, 10

• soft, hard, can, 5.5

• hard, soft, can't 1

Streak = (powder, laser) left behind when a mineral is pushed over a (metal, porcelain) tile, streak (does, does not) always match the mineral color, ex – pyrite looks like gold with black streak

• powder, metal, does not

• laser, porcelain, does

• powder, porcelain, does not

Fracture = (flat sides, jagged edges)

• flat sides

• jagged edges

Cleavage = (flat sides, jagged edges)

• flat sides

• jagged edges

Luster – how a mineral reflects light, examples m__________(pyrite) or n_____________________(halite)

• magma or nitrogen

• metallic or nonmetallic

• music or nickel

2 minerals with cubic (cube) cleavage (halite, potassium feldspar, quartz, galena, calcite)

• quartz and calcite

• halite and galena

• potassium feldspar and halite

• calcite and potassium feldspar

Rhombohedral (rhombus/diamond) cleavage = (halite, calcite, quartz)

• halite

• calcite

• quartz

Reacts with acid = (quartz, halite, calcite, dolomite when crushed)

• quartz and calcite

• calcite and dolomite when crushed

• halite and dolomite when crushed

• quartz and halite

Tags

NGSS.MS-PS1-2