What connects all of these images

1
What connects all of these images?
1
3
2
4
5
6
8
9
7
2
1
3
2
4
3
5
4
6
5
7
6
8
7
9
8
10
9
11

• This is a tor on Dartmoor
• Dartmoor is a National Park in Devon
• The underlying rock is granite
• Tors are found on hilltops and are the result of
  weathering of the granite

12

• This cup is made of porcelain
• Fine porcelain is known as bone china
• It was made in Stoke on Trent
• Bone china is made from bone ash, china stone and
  china clay

13

• This harbour is Fowey (pronounced Foy)
• It is in the south of Cornwall
• It used to export china clay
• Much of Cornwalls china clay went by sea to
  Liverpool

14

• This is a close up of a piece of granite
• Granite comprises three types of minerals
• quartz is clear and greyish like glass
• mica is black and shiny
• feldspar is white (sometimes pink)
• The feldspar can be weathered by a process called
  kaolinisation
• Many of the upland areas in Cornwall are
  underlain by granite

15

• This cone is in Cornwall
• It is not a volcano!
• It is made of quarry waste

16

• This is a pottery factory in Stoke on Trent
• It has been preserved as a museum
• The chimneys are bottle ovens where porcelain
  was fired
• Stoke on Trent was linked by canal and railway to
  the port of Liverpool

17

• This is a disused china clay pit in Cornwall
• China clay was quarried using powerful jets of
  water to break up weathered (kaolinised) granite
• The china clay (kaolin) then dried out as a powder

18

• This is the Eden Project near St Austell in
  Cornwall
• It is located in a former china clay pit
• Inside one of the biomes there is a real
  living, growing rainforest

19

• These are granules of china clay or kaolin
• When granite is weathered, the feldspar crystals
  within it break down into china clay or kaolin
• China clay is an important ingredient for
  porcelain manufacture