2+] to produce magnesian
calcite, or its precipitation with carbonate or silicate to produce, respectively, hydromagnesite and nesquehonite or sepiolite (Suarez 2005).
Mineralogical analysis of brown shale sample contains Monticellite, Mayenite, Calcite, Magnesian
, Quartz, Phlogopite and Montmorillonite minerals.
Orthopyrexene in the harzburgite is similarly magnesian
Carlin deposits occur as the result of low temperature solutions precipitating gold, silver and sulphide minerals in limey, magnesian
and carbonaceous sediments, which have first been made a porous and receptive host by the effect of acid solutions emanating from nearby intrusions and fragmentation from fault activity.
7 Ga adakites, magnesian
andesites, and arc basalts, Superior Province: evidence for shallow crustal recycling at Archean subduction zones.
All atoms were found to be in positions similar to the analogous atoms in the magnesian
rhodonite reported by Peacor et al.
Olivine is highly magnesian
and shows normal zoning from cores of [Fo.
On the former, half a mile above its mouth they are decidedly magnesian
, the only spot where this character was found in the country.
Casting of the melts was performed on MCCB through an intermediate ladle with a magnesian
lining (diameter of the dosing unit channels is 16.
The Knox Dolomite, a massively bedded, partially crystalline, gray magnesian
limestone of Cambrian and Ordovician age, is some 3500 feet thick in this area.
and attributed the Ionic influences clearly seen in the work to the presence at Amyklai of the Magnesian
Sherd Temper Modern Dune Grain Type Sands Sands quartz 17 [+ or -] 4 [9-23] 20 [+ or -] 5 [12-28] plagioclase 22 [+ or -] 6 [13-31] 12 [+ or -] 3 [7-17] K-feldspar 2 [+ or -] l [1-4] 2 [+ or -] 1 [1-3] total quartzo/ feldspathic 41 [+ or -] 10 [23-54] 34 [+ or -] 7 [20-48] clinopyroxene 20 [+ or -] 6 [10-31] 24 [+ or -] 7 [14-37] hornblende 7 [+ or -] 2 [5-12] 5 [+ or -] 2 [3-9] epidote 3 [+ or -] 3 [1-11] 3 [+ or -] 1 [2-4] opague iron oxide 10 [+ or -] 4 [3-19] 9 [+ or -] 4 [3-15] total ferro- magnesian
39 [+ or -] 10 [27-61] 41 [+ or -] 10 [24-60] total poly- crystalline lithic 20 [+ or -] 4 [16-31] 24 [+ or -] 3 [19-30]
Talc: Many of the world's PGE deposits are associated with highly magnesian
silicate igneous rocks, which can be easily altered to talc-bearing rocks.
It is suggested that inclusion-rich spar records the former presence of a prolific microbial binder of unknown affinities, which induced precipitation of magnesian
calcite that was later either neomorphosed to inclusion-rich calcite (c.
Kimberlite is a host rock to diamonds, but not a source rock: Kimberlite indicator minerals consist of pyrope and eclogitic garnets, magnesian
ilmenite, chromite, chorine diopside, forsteritic olivine and diamond and the presence of these minerals is used to determine the proximity of diamond-bearing kimberlites.