Mineralogical Magazine, 1998, V 62, N 3, June (N410).

A.C. Kerr: Mineral chemistry of the Mull-Morvern Tertiary lava succession, western Scotland 295

R.W. Kent, S.P. Kelley and M.S. Pringle: Mineralogy and 40Ar/39Ar geochronology of orangeites (Group II kimberlites) from the Damodar Valley, eastern India 313

R.S. Bottrill: A corundum-quartz assemblage in altered volcanic rocks, Bond Range, Tasmania 325

J.P.R. de Villiers, P.R. Buseck and H.S. Steyn: MnO exsolution in periclase from Langbån, Sweden: an evaluation of the activity-composition relations in the system MgO-MnO 333

R.H. Mitchell and A.R. Chakhmouradian: Th-rich loparite from the Khibina alkaline complex, Kola Peninsula: isomorphism and paragenesis 341

E.A. Belousova, W.L. Griffin and N.J. Pearson: Trace element composition and cathodoluminescence properties of southern African kimberlitic zircons 355

P. Lattanzi, P. Zuddas and F. Frau: Otavite from Montevecchio, Sardinia, Italy 367

R.J. King: Tamarugite on the Isle of Wight, UK 371

J.A.K. Tareen, A.V.K. Prasad, B. Basavalingu and A.V. Ganesha: Stability of F-Ti-phlogopite in the system phlogopite-sillimanite-quartz: an experimental study of dehydration melting in H2O-saturated and undersaturated conditions 373

B.E. Leake: Widespread secondary Ca garnet and other Ca silicates in the Galway Granite and its satellite plutons caused by fluid movements, western Ireland 381

M.D. Welch, A.J. Criddle and R.F. Symes: Mereheadite, Pb2O(OH)Cl: a new litharge-related oxychloride from Merehead Quarry, Cranmore, Somerset 387

D. Holstam, P. Nysten and K. Gatedal: Parageneses and compositional variations of Sb oxyminerals from Langbån-type deposits in Värmland, Sweden 395

G.P. Bulanova, W.L. Griffin and C.G. Ryan: Nucleation environment of diamonds from the Yakutian kimberlites 409

C.M. Rice, K.E. Darke, J.W. Still and E.E. Lachowski: Tungsten-bearing rutile from the Kiro Kollo gold mine, Bolivia 421