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37:2 ·
These ideograms are structurally identical to the signs above. But owing to the fact that the open ends have been elongated they look different.  has been used in alchemy to represent calcinated copper, i.e. copper oxide in powder form, produced by heating copper intensely.
See  , calcinate, and the synonymous signs  ,  and  .
Turned as  it becomes another of all the alchemists' signs for sulphur. Sulphur, however, was usually drawn  .
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