Update - MB Fluorspar Project, Nevada USA

www.tertiaryminerals.com

("the Company")

31 January 2013

Update - MB Fluorspar Project, Nevada USA

Tertiary Minerals plc wishes to advise of a small delay to the receipt of the independent report of a tonnage-grade estimate for its MB fluorspar project in Nevada, USA which was expected no later than 31 January 2013.

It is anticipated that the delay will not be greater than seven working days.

ENQUIRIES:

Tertiary Minerals plc Tel: +44 (0)845 868 4580

Patrick Cheetham, Executive Chairman

Seymour Pierce Limited Tel: +44 (0)20 7107 8000

Stewart Dickson/Julian Erleigh (Corporate Finance)

Jeremy Stephenson/Jacqui Briscoe (Corporate Broking)

VSA Capital Limited Tel: +44 (0)20 3005 5000

James Pinner (Corporate Finance)

Andrew Monk (Corporate Broking)

Yellow Jersey PR Limited Tel: +44 (0)203 664 4087

Dominic Barretto/Anna Legge

Notes to Editors

Tertiary Minerals plc (ticker symbol 'TYM') is an AIM-quoted mineral exploration and development company building a significant strategic position in the fluorspar sector. Fluorspar is an essential raw material in the chemical, steel and aluminium industries. Tertiary controls two significant Scandinavian projects (Storuman in Sweden and Lassedalen in Norway) and a major deposit of strategic significance in Nevada USA (MB Project).

The US Government considers fluorspar to be a strategic mineral. There is a large market for fluorspar in the US and around the Pacific Rim, but currently no significant US production.