Complete the chart. metallic
black markings on
the streak plate
softer than a
fingernail
(hardness less
than 2
harder than a
finger til
(hardness greater
than 2
magnetic
nonmagnetic
harder than the
streak plate
(hardness greater
than 7
nonmetallic
feeling
softer than an iron nail
(hardness less
than 4,5)
density near
3 g/ml
DOL SIT)
laginu
density near
2 g/ml
quartz
gypsum
pyrite
magnetite
graphite
fluorite
talc

MINERAL NAMELUSTER (appearance)HARDNESSDISTINGUISHING PROPERTIES

PyriteMetallicSlightly harder than glassHardness greater than glass (H ~ 6-6.5); Brassy yellow color; black streak; Crystals commonly cubic; no cleavage.

GalenaMetallicSofter than glass3 perfect cleavages at 90 degrees, high density.

HematiteMetallic or non-metallic lusterHard to tell, but harderRed-brown streak.

HornblendeNon-metallic (black)Harder than glassUsually black or dark green; 2 cleavages at 60°/120° (56°/124°)

BiotiteNon-metallic (black)Slightly harder than glass1 perfect cleavage; Dark brown-black color, faint yellow-brown streak.

OlivineNon-metallic (green)Slightly harder than glassOlive green color; Granular; Conchoidal fracture; Hardness greater than glass (H ~ 6.5 – 7).

Plagioclase FeldsparNon-metallic (med. grey to light grey)Slightly harder than glass2 cleavages at about 90°; Striations (twinning) present; can be white to dark gray.

Potassium FeldsparNon-metallic (Pink to white)Slightly harder than glass2 cleavages at about 90°; Striations not present; can be pink, white (sometimes green).

QuartzNon-metallic (any color)Harder than glassHexagonal crystals; No cleavage planes; Conchoidal Fracture; Hardness greater than glass (H=7 on Moh’s scale).

MuscoviteNon-metallic (gold-clear)Softer than glass1 perfect cleavage; Colorless or silvery appearance, once used for window glass; Ke$ha likes it.

FluoriteNon-metallic (purple, green, yellow)Softer than glasssofter than glass; FOUR cleavage planes!

CalciteNon-metallicSofter than glass3 perfect cleavages not at 90° (rhombohedral cleavage); Fizzes readily when HCl acid applied.

HaliteNon-metallicSofter than glass3 perfect cleavages at 90°; Tastes like salt, feels greasy.

GypsumNon-metallicSofter than glass and softer than a fingernailGenerally clear to white; One perfect cleavage, may show up to 3 cleavages; Easily scratched with a fingernail.

is it even right

the first phase of the government’s plan for settlement was building the transcontinental railroad. the railroad provided a way to bring settlers and manufactured goods west and ship their agricultural and mining produce east. the transcontinental railroad was an essential artery for rapid development of the frontier.

the second phase of the government’s plan was a liberal land distribution policy that made it possible for many people to homestead. with these two key elements—transportation and cheap land—the government rapidly achieved its goal of persuading people to move west, settle on farms, and push back the frontier.