Acer palmatum, although there are more than 100 species of maple worldwide, only one species (Acer campestre) is native to the UK.

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Earth lab datasite

Barytocelestine
Sulphate contains barium
barium strontium sulphate
Ba Sr SO4
Scale bar = 1 centimetre
cleavage: Perfect
crystal system: Orthorhombic
hardness:  3.0 - 3.5
relative density:  4.0
Coldharbour Farm, Redland, Bristol
25 G 4