Alkaline Rocks and Carbonatites of the World

Funded by HiTech AlkCarb - New geomodels to explore deeper for Hi-Tech critical raw materials in Alkaline rocks and Carbonatites

Pantano

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Occurrence number: 
025-00-058
Country: 
Brazil
Region: 
Minas Gerais
Location: 
Longitude: -46.83, Latitude: -18.58

A small volcanic chimney cuts slates of the Bambui Group. Described as 'alkali olivine basalt', but contains perovskite, biotite (10%) and serpentine (35%), with some zeolite (Barbosa et al. 1970).

Age: 
77.6±3.9 Ma by K-Ar on olivine basalt (Hasui and Cordani, 1968).
References: 
BARBOSA, O., BRAUN, O.P.G., DYER, R.C. and CUNHA, C.A.B.R. da, 1970. Geologia da regiao do triangulo Mineiro. Boletim, Departamento Nacional de Producao Mineral. Divisao de Fomento da Producao Mineral. Rio de Janeiro, 136: 1-140. HASUI, Y. and CORDANI, U.G. 1968. Idades potassio-argonio de rochas eruptivas Mesozoica do oeste mineiro e sul de Goias. Anais Congresso Brasileiro de Geologia, 22: 139-43
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith