schist

noun 0.593

silcrete

noun 0.587

flint

noun 0.569

chalkland

noun 0.566

chromitite

noun 0.548

shale

noun 0.548

chit

noun 0.548

chalk

noun 0.547

chalcedony

noun 0.536

quern

noun 0.536

chisel

noun 0.534

tuff

noun 0.532

chloritoid

noun 0.531

chockstone

noun 0.530

chitin

noun 0.529

obsidian

noun 0.529

siderite

noun 0.528

bedrock

noun 0.527

quartzite

noun 0.527

flintwork

noun 0.526

chromite

noun 0.524

clastic

noun 0.523

cherrystone

noun 0.522

chondrite

noun 0.520

potsherd

noun 0.520

chondrule

noun 0.520

red chalk

noun 0.519

cheddar

noun 0.518

clunch

noun 0.518

gneiss

noun 0.517

chrysoberyl

noun 0.517

crystal

noun 0.517

clay

noun 0.516

lithic

noun 0.516

garnet

noun 0.515

hardstone

noun 0.515

sedimentary

noun 0.515

chabazite

noun 0.514

kankar

noun 0.510

clinker

noun 0.510

carbide

noun 0.510

pebble

noun 0.509

beryl

noun 0.509

cristobalite

noun 0.509

caliche

noun 0.509

tektite

noun 0.508

cobble

noun 0.508

calcite

noun 0.507

gritstone

noun 0.507

chrysoprase

noun 0.507

carborundum

noun 0.506

gravel

noun 0.506

ironstone

noun 0.505

karst

noun 0.504

stone

noun 0.504

cherry pit

noun 0.503

chernozem

noun 0.502

garnets

noun 0.501

sandstone

noun 0.501

culm

noun 0.500

sedimentary rock

noun 0.500