Stone in Archaeology Database


Polyphant Stone

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Local Name(s): Polyphant Stone,
Polyfant Stone,
Hick's Mill Stone.
Example of Polyphant Stone
Stone Group: Igneous
Stone Type: Serpentinite
Geology:
Era:   Undesignated
Period:   Igneous Intrusive
Epoch:   Not Applicable
General Colour Description:

A dark grey-green colour with brown ferruginous spots. It may have a warm brown tinge on weathered samples.

Hand Specimen Description:

Polyphant stone is a serpentinite (a metamorphosed picrite). It is a coarse grained, very hard, crystalline rock which is moderately well sorted. It has a soapy feel when polished.

Stone Identifiers: Crystalline.
Reacts dilute to HCl? No