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

Wolframite
Tungstate tungsten ore
iron manganese tungstate
Fe Mn WO4
Scale bar = 1 centimetre
cleavage: Perfect
crystal system: Monoclinic
hardness:  4.0 - 4.5
relative density:  7.1 - 7.5
East Pool mine, near Redruth, Cornwall
25 H 4