Geosoft Map Description File

Unknown

text

File format developed by Geosoft to integrate all graphics elements such as polygons, lines and text and layers (images, data, basemaps, plots and grids) constructed in Oasis montaj software.

Identify it

Extensions	`.mdf`
Signatures	`2f2078732c79732c6d622c6d722c6d742c6d6c` at byte 56 (Geosoft Map Description File)
PRONOM	`fmt/1726`
Wikidata	`Q113534253`

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Open it

Oasis montajreads and writes

Convert it

No conversion recorded. One of the tools above may export it; search for a chain.

Sources

PRONOM fmt/1726
Wikidata Q113534253

From PRONOM, Wikidata. Updated 2026-10-20.

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