Vancouver, B.C., October 11, 2011 – Extorre Gold Mines Limited (AMEX:XG; TSX:XG; Frankfurt: E1R, “Extorre” or the “Company”) is pleased to announce that all assays are in hand for the first National Instrument 43-101 compliant resource estimate for the Zoe zone at Cerro Moro, Santa Cruz Province, Argentina. Assays for the final 33 drill holes of the approximately 100 holes to be included in the initial resource estimate are reported in this release.

Assay highlights include:

MD1345 intersected 3.00 metres (“m”) at 18.9 grams per tonne (“g/t”) gold + 943 g/t silver (37.8 g/t gold equivalent*), including 0.88 m at 55.5 g/t gold + 2,655 g/t silver (108.6 g/t gold equivalent*).

MD1348 intersected 3.65 m at 17.3 g/t gold + 2,314 g/t silver (63.6 g/t gold equivalent*), including 0.34 m at 116.8 g/t gold + 16,068 g/t silver (438.2 g/t gold equivalent*).

MD1351 intersected 2.02 m at 39.1 g/t gold + 2,231 g/t silver (83.7 g/t gold equivalent*), including 0.51 m at 113.6 g/t gold + 5,250 g/t silver (218.6 g/t gold equivalent*).

MD1362 intersected 7.70 m at 10.1 g/t gold + 3,285 g/t silver (75.8 g/t gold equivalent*), including 1.40 m at 53.0 g/t gold + 17,297 g/t silver (399.0 g/t gold equivalent*).

MD1372 intersected 2.55 m at 15.8 g/t gold + 1,494 g/t silver (45.7 g/t gold equivalent*), including 0.43 m at 69.1 g/t gold + 4,932 g/t silver (167.7 g/t gold equivalent*).

Drilling continues at Zoe with a total of 119 diamond drill holes now completed since the March 2011 discovery. Results from 19 new holes are awaited.

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