Haemoilmenite, ilmenohaematite and rutile, Allard Lake, Quebec, Canada

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The ilmenite (pink-brown) host carries fine discoid haematite exsolution bodies parallel to (0001) and coarser ilmenohaematite (white) which in turn has fine-grained ilmenite exsolution (centre). Coarse-grained rutile (lilac-grey, centre) is common within ilmenohaematite. The concentration of fine haematite exsolution bodies within the ilmenite decreases towards the coarser grained ilmenohaematite and so shows a seriate distribution. Black areas are polishing pits.

Polished block, plane polarized light, x 160, oil

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