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

Jamesonite
Sulphide lead ore
lead iron antimony sulphide
Pb4 Fe Sb6 S14
Scale bar = 1 centimetre
cleavage: Perfect basal
crystal system: Monoclinic
hardness:  2.0 - 3.0
relative density:  5.5 - 6.0
25 C 6