Leószilárdite, the first Na,Mg-containing uranyl carbonate from the Markey Mine, San Juan County, Utah, USA
Dzierżanowskite, CaCu2S2 – a new natural thiocuprate from Jabel Harmun, Judean Desert, Palestine Autonomy, Israel
Complex exsolution microstructures in ilmenite–pyrophanite from the Garnet Codera dyke pegmatite (Central Italian Alps): an electron microscopy investigation
Centennialite, CaCu3(OH)6Cl2.nH2O, n ≈ 0.7, a new kapellasite-like species, and a reassessment of calumetite
Synthesis and crystal structure of C2/c Ca(Co,Mg)Si2O6 pyroxenes: effect of the cation substitution on cell volume
Currierite, Na4Ca3MgAl4(AsO3OH)12·9H2O, a new acid arsenate with ferrinatrite-like heteropolyhedral chains from the Torrecillas mine, Iquique Province, Chile
Erratum to Gibson (2017) On the nature and origin of garnet in highly-refractory Archean lithospheric mantle: constraints from garnet exsolved in Kaapvaal craton orthopyroxenes (Mineralogical Magazine, 81, 781–809).
Fluorophlogopite-bearing and carbonate metamorphosed xenoliths from the Campanian Ignimbrite (Fiano, southern Italy): crystal chemical, geochemical and volcanological insights
Crystal structure determination of karibibite, an Fe3+ arsenite, using electron diffraction tomography
Three-dimensional study by synchrotron radiation computed tomography of melt distribution in samples doped to enhance contrast
Dissolution kinetics of hydrated calcium aluminates (AFm-Cl) as a function of pH and at room temperature
Cancrinite–vishnevite solid solution from Cinder Lake (Manitoba, Canada): crystal chemistry and implications for alkaline igneous rocks
CNMNC Newsletter 39
Agates (a) Specimen ‘Maddina 3’ showing a contrasting lighter colouredwall contact layer and vertical cracks. (b) The same slab of ‘Maddina 3’ in thin section demonstrating the sweeping chalcedonic fibrosity that runsmostly from the outer edge to the centre of the agate. (c) Specimen ‘Botswana 112’ – an unusual agate showing a clean fracture between the brown region and the black and white centre. The fracture is shown on the extreme right and insert. (d) A thin section of the same agate showing a less pronounced fibrosity than in ‘Maddina 3’. The insert shows the contrasting microtexture of thewall contact band against the lighter texture of the bulk of the agate. Figs (b) and (d)with crossed polars; scale bars for the whole agates = 1 cm; Fig (c) insert = 5 mm; Fig. (d) insert = 1 mm. See Moxon (this issue).
- PDF Icon PDF LinkTable of Contents