The compositions of resistant indicator minerals are diagnostic their original host environment. They may be used to fingerprint different types mineral deposit as well vector towards them. We have characterised the composition apatite and Fe–Ti oxides in variably mineralised mafic–ultramafic rock units Montagnais Sill Complex Labrador Trough assess suitability for vectoring magmatic sulphide o...

This article reports new geochemical, Sr-Nd-Hf-Pb and Re-Os data on the rocks of Middle Paleoproterozoic (1.99 Ga) Tiksheozero ultramafic-alkaline-carbonatite complex confined to northeastern margin Karelian Craton. We focus poorly studied silicate rocks. Based petrographic geochemical research, are subdivided into two groups: an ultramafic-mafic series depleted in REE, other incompatible eleme...

The origin of the Martian satellites presents a puzzle of long standing. Addressing the composition of Phobos will help constrain theories of its formation. Visible and near-infrared spectra of Phobos lack of deep absorption features, making the compositional interpretation a tricky task. PFS/MEx and TES/MGS observations in the thermal infrared show several spectral features that can be used to...

Introduction: In the search for life on Mars nearsurface soil environments may be important habitats for life accessible to future missions. Serpentinite rocks have been documented on Mars [1], as well as other clay minerals including smectite and kaolinites [2, 3]. Previous studies of soils formed on serpentinites on Earth have documented the formation of extensive clays, including smectite [4...

The stratigraphy of the South-Pole Aitken basin (SPA) interior is consistent with that of a massive impact melt sheet that differentiated to form cumulates. Spectroscopic and geophysical constraints on the stratigraphy of SPA suggest a 12.5 km thick layer of norite above ultramafic pyroxenite and dunite layers. A similar stratigraphy is produced from differentiation by crystal settling of a 50 ...

Pipe-like ultramafic bodies, hosting Ni–Cu–PGE sulphide deposits, INTRODUCTION intrude the Main Gabbro and the roof metasediments of the Ivrea The Ivrea Zone, in NW Italy, is believed to represent an Zone, NW Italy. These bodies were emplaced at 287 ± 3 Ma exposed section of the lower continental crust (Mehnert, and represent the last mantle-derived melts associated with an 1975; Garuti et al.,...

Introduction Since human settlement of New Caledonia, the natural disturbance regime has been altered, leading to a number of changes in landscape composition and structure. In particular, the vegetation on ultramafic substrate has been greatly affected by fire and other human disturbances associated with logging and mineral exploration. It is therefore pertinent to ask how the landscape may re...

This paper provides the results on spinel sampled from ailikites of Bolshetagninskii massif East Sayan region. The study aimed to determine history formation ultramafic lamprophyres Ziminsky complex. Spinel three dikes with different mineral compositions groundmass but similar textural and structural features (BTG 2/21, TGK 3, BTG 6/21) was analyzed. content main elements microcomponents in det...