A great deal of ball clay, china stone, and lignite are extracted from the surrounding mountains.
12.
Raw materials include local quartz and feldspar, as well as imported kaolin, ball clay and feldspar.
13.
Other raw materials can include feldspar, ball clay, glass, bone ash, steatite, quartz, petuntse and alabaster.
14.
Purbeck ball clay was dug from the pit from the mid-17th century to the early 20th century.
15.
Ball clay is quarried in the east of the parish, as it has been for many years.
16.
It is said that a third of all fine pottery ever produced in England contains Purbeck Ball Clay.
17.
A wharf on the River Frome at Ridge was once a major transhipment point for Purbeck Ball Clay.
18.
The Purbeck Mineral and Mining Museum displays an exhibition about ball clays, mining and the associated narrow gauge railways.
19.
The minerals are feldspar, ball clay, bentonite, pyrophyllite, calcite, gypsum, phosphate rock, quartz, coal, dolomite, gemstone, tin ore, and manganite.
20.
Quarrying still takes place on Purbeck, with both Purbeck Ball Clay and limestones being transported from the area by road.
