Microcline

Reference [598], in Fig. 1.4c, reports titration results in 0.001, 0.01, and 0.1 M NaCl. The PZC is difficult to read from the figure. Also Al- and Fe-coated. 

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Microbond NP Microbond NP2 Microbubble flotation Microbubbles Microcarriers Microcline [12251-43-3] Micrococcin P... 

Meta.soina.tlte Deposits. Included in the metasomatite deposit grouping are uranium deposits in alkah metasomatites, eg, albitites, aegirinites, and alkah—amphibole rocks, commonly intmded by microcline granite. Examples are the deposits in Espinharasin, Brazil, and Ross Adams, Alaska, as well as the Zheltye Vody deposit in Krivoy Rog area in Ukraine (16). 

Fig. 2.39. Na /K+ atomic ratios of well discharges plotted at measured downhole temperatures. Curve A is the least squares fit of the data points above 80°C. Curve B is another emperical curve (from Truesdell, 1976). Curves C and D show the approximate locations of the low albite-microcline and high albite-sanidine lines derived from thermodynamic data (from Fournier, 1981). Small solid subaerial geothermal water Solid square Okinawa Jade Open square South Mariana Through Solid circle East Pacific Rise 11°N Open circle Mid Atlantic Ridge, TAG.

In our second example, we calculate the same ratio for the reaction between muscovite and potassium feldspar (KAlSiaOs maximum microcline in the database) in the presence of quartz ... 

In an example of a sliding temperature path, we consider the effects of cooling from 300 °C to 25 °C a system in which a 1 molal NaCl solution is in equilibrium with the feldspars albite (NaAlSiaOs) and microcline (KAlSisOg), quartz (SiC>2), and muscovite [KAl3Si30io(OH)2]. To set up the calculation, we enter the commands... 

Fig. 14.1. Mineralogical results of tracing a polythermal reaction path. In the calculation, a 1 molal NaCl solution in equilibrium with albite, microcline, muscovite, and quartz cools from 300 °C to 25 °C.

In the calculation results (Fig. 14.1), albite reacts to form microcline,... 

To test whether the mixing hypothesis might explain the diagenetic alteration observed, we begin by equilibrating the fresh water, assuming equilibrium with the potassium feldspar ( maximum microcline in the database), quartz, and muscovite (a proxy for illite) in the formation. In REACT, we enter the commands... 

Fig. 25.1. Mineralogical consequences of mixing the two fluids shown in Table 25.1 at 60 °C in the presence of microcline, muscovite, quartz, and dolomite. Results shown as the volume change for each mineral (precipitation is positive, dissolution negative), expressed per kg of pore water.

Roughly, 0.18% of the total mineral composition containing Fe203 in the brown clay was detected by XRD. Other minerals like quartz, K-feldspar, muscovite, microcline, mica, and pyrite were also identified by XRD data. 

Flotation of pyrochlore using sodium alkyl sulphate is dependent on flotation pH. At a pH above 5.5, no pyrochlore flotation is achieved. At this pH, microcline, limonite and aegirine were floated. It appears that the use of alkyl sulphate at slightly acidic to alkaline pH number of gangue minerals can be selectively floated from pyrochlore. At a pH between 1.5 and 3.0, alkyl sulphate floats pyrochlore and zircon, whereas floatability of limonite, microline and aegirine is greatly reduced (Figure 22.4). 

Similarly to Mn(IV)- and Fe(III)-oxides, some primary minerals were shown to promote polymerization of hydroquinone (19). Olivines, pyroxenes, and amphiboles accelerated the polymerization reaction to a greater extent than micas and feldspars. Microcline and quartz were ineffective- The effect was greatest for tephroite, a manganese-bearing silicate with the ideal chemical formula M SiO. Fayalite, the corresponding Fe(II) analog (Fe2Si0 ), was effective, but to a lesser extent. 

Tectosilicates 3 dimensional netw/orks 1 2 Microcline Quartz of linked tetrahedra K(AISi3)Og Si02... 

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