. . "2500.0"^^ . . . . "COLTI"@en . "Coll-Tiree Swarm"@en . "Lamprophyre and trace camptonite and monchiquite."@en . "1600.0"^^ . "Coll-Tiree Swarm"@en . "stable"@en . . . . "Lamprophyre and trace camptonite and monchiquite. Strongly deformed and/or metamorphosed bedrock. Occurs onshore. Formed during the Paleoproterozoic Era (Precambrian) (2500-1600 Ma BP)."@en .