Metamorphic Rocks

slate

folitaed, no visible minerals,

phyllite

foliated, fine mica

schist

foliated, mica and garnet

gneiss

foliated, potassium feldspar and garnet

slate, phyllite, schist, gneiss parent rock

shale

T/F: granite can be a parent rock of gneiss

true

slate historic/prehistoric uses

roofing, chalkboards; bannerstones, carvings, gorgets

gneiss historic/prehistoric uses

carvings, buildings; bannerstones, pestles, sculptures, FCR

marble

non-foliated, calcite, reacts with HCl

quartzite

non-foliated, quartz, scratches glass

steatite

non-foliated, (talc), scratched by fingernail

greenstone

non-foliated, no visible minerals

marble parent rock

limestone

quartzite parent rock

sandstone

steatite parent rock

talc

greenstone parent rock

basalt

marble historic uses

sculpture, gravestones

quartzite historic/prehistoric uses

gravestones; stone tools (if fine-grained enough)

steatite historic/prehistoric uses

carving, sculpture, gravestones; stone bowls (indirect heat)

T/F: greenstone is soapstone

false

basalt prehistoric uses

hoes, adzes, celts, carvings

anthracite

non-foliated, organics

anthracite parent rock

bituminous coal

anthracite historic uses

mined for fossil fuel

catlinite

metamorphosed argillite (claystone)

T/F: catlinite scratches glass

false

catlinite prehistoric uses

pipes and carvings

metamorphic rock

parent rocks that have been altered by heat and pressure

metamorphism can create what?

new textures and minerals