natural material
product or physical matter that arises without the use of technology
shingle
detritus or alluvial material of well-rounded rock fragments (pebbles, cobbles or small boulders)
natural fiber
any fibre derived from natural sources such as plants, animals or minerals
cottonseed
seed of the cotton plant
rock flour
fine-grained, silt-sized particles of rock
peat material
soil material primarily composed of organic substance
extraterrestrial materials
natural objects that originated in outer space
sedimentary material
sediments and sedimentary rocks
rock
naturally occurring solid aggregate of one or more minerals or mineraloids
parent material
underlying geological material in which soil horizons form
tanbark
tree bark
withy
material used for weaving
natural building material
Building materials consisting of naturally occurring substances such as mud, clay, ice and snow.
sand grain
small mineral particle barely visible by naked eye; particle with size from 0.0625 mm diameter and volume 0.00012 cubic millimetres to 2 mm diameter and volume 4.2 cubic millimetres