My main fields of interest are:- The identification of processes that form sulphates at the surface in  low  temperature environments such as those found in acid thermal areas. Sulphate formation in other areas. Zeolites of the Parnell Grit Formation, Auckland District New Zealand mineral occurrences Silica sinter research Minerals and crystals formed as by-products of industrial glassmaking

Martin, R. J. 1991 Apatite crystals from Parnell Grit Formation, Waiwera, Auckland. Tane 33 pp 59-63.

Martin, R., Rodgers, K.A. & Browne, P.R.L. 1999 The nature and significance of sulphate-rich, aluminous efflorescences from the
    Te Kopia geothermal field, Taupo Volcanic Zone, New Zealand. Mineralogical Magazine 63 pp 413-421.

Martin, R., Rodgers, K.A. & Browne, P.R.L.  2000 Aspects of the distribution and movement of aluminium in the surface of the Te
    Kopia geothermal field, Taupo Volcanic Zone, New Zealand. Applied Geochemistry 4/2 pp 1-16

Martin, R., Mildenhall, D., Browne, P. & Rodgers, K.A. 2000 The age and significance of in-situ sinter at the Te Kopia thermal area,
    Taupo Volcanic Zone, New Zealand. Geothermics 29 pp 367-375.

Rodgers, K.A., Hamlin, K.A., Browne, P.R.L., Campbell, K.A. & Martin, R. 2000 The steam condensate alteration mineralogy of
    Ruatapu cave, Orakei Korako geothermal field, Taupo Volcanic Zone, New Zealand. Mineralogical Magazine 64(1) pp 125-142.