noun

white stone used for making statues and other objects used for decoration

noun

a dark-green or black rock formed when hot liquid rock from a volcano becomes solid

noun

a type of soft white stone

noun

a clear rock that looks like glass, especially quartz

noun

a type of hard pale stone

another spelling of feldspar

noun

a hard grey stone that was used in the past for making tools

noun

a red mineral (=rock) from which iron is obtained

noun

the American spelling of haematite

adjective

igneous rocks are formed from liquid rock from volcanos that becomes solid as it gets cold. Granite and basalt are igneous rocks.

noun

the solid rock that forms when liquid lava becomes cold

noun

a type of white or grey stone containing calcium, used for building and making cement

noun

hot liquid rock inside the Earth

noun

a hard smooth stone used for building and making statues. Marble is usually white with dark lines that are not regular in shape

noun

the rock in which hard stones or jewels form

noun

a transparent stone often used in electrical equipment

noun

rock or earth from which metal can be obtained

noun

a very light grey stone from a volcano

noun

a hard shiny stone often used inside electronic equipment and watches

noun

salt that is dug out of the earth in lumps of rock

noun

a type of pale yellow stone used for building, made from sand that has become hard over many years

adjective

sedimentary rock is a type of rock that is formed from substances that have been left by water, wind, or ice and have become pressed together through time. The other types of rock are igneous rock and metamorphic rock.

noun

a type of smooth dark rock that breaks into thin layers

noun

a type of dark grey stone that breaks easily into flat thin pieces

noun

a type of soft stone that is often carved to make decorations

adjective

formed into layers of a particular type of rock

noun

a very soft stone used for making talcum powder

adjective