In Europe, the market has generally preferred hand-carved frames to those common in England and America in the 19th century, which were adorned with molded and applied ornament made from "compo, " a plasterlike composition material.

FORBES: Features

Observations of the material coating the dark face of Iapetus indicate it has a similar composition to the surface material on Phoebe.

BBC: New ring detected around Saturn

Assuming not, might it also help to more accurately date the composition of the source material?

FORBES: Could Computer Analysis Help Date the Gospels?

Since cosmic radiation alters surface composition, Curiosity can drill into rock to extract pristine material from below.

CNN: Curiosity opening Martian frontier?