We assume that initial vigilance for pain-associated stimuli might reflect an adaptive reaction to detect a potentially harmful stimulus. Subsequently, the pain-associated stimulus might be less attended for the purpose of mood regulation when all clear is given in this situation.
Abstract. Hydroromarchite is a mineral that so far has been found only in a
few locations in the world and recognized as a common product of submarine
corrosion of pewter artefacts. Here we report a new locality for this rare
mineral found at the Saint James Church archaeological site in Creussen,
Germany. There it appeared to be a product of weathering of a tin artefact
(a tin button) buried in soil of the churchyard for about 300 years. The
mineral, found in paragenesis with romarchite and cassiterite, was
identified using single-crystal X-ray diffraction.
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