As secondary mineral
, it is found and at places enriched in the the foreland sedimentary fold and thrust belt (Indus Basin) and also in clastic sandstone of different ages because of porous and permeable nature.
Shattuckite is a hydrous copper silicate, [Cu.sub.5][(Si[O.sub.3]).sub.4] [(OH).sub.2], which occurs as a secondary mineral
in oxidized copper deposits and is commonly associated with chrysocolla, ajoite, malachite and quartz (Anthony et al., 1995).
Thus two types of secondary mineral
will be formed.
In many phenocrysts, secondary mineral
associations of Fe-Ti oxides, clinopyroxenes and plagioclases form completely decomposed (pseudomorphed) grains with shape of original minerals.
Another key mineral, ettringite, is a common secondary mineral
phase that is formed during the hydration of semicoke and ash in alkaline conditions as a result of the reaction of portlandite with sulphur compounds (oldhamite (CaS) in semicoke and anhydrite (CaS[O.sub.4]) in ash) and dehydroxylated aluminosilicate clays and/or Al-Si glasses.
It is possible that an increase in metastable and stable secondary mineral
forms of Al may be associated with more Al in soil porewater.
Further hydrolysis of water alters the albite to a secondary mineral
, kaolinite, and releases the sodium and some soluble silica.
This niche for long-distance hauling in the mining industry began to surface as more and more mining companies look to secondary mineral
deposits as a way to supplement the declining primary mineral bodies.
Northern Ontario mining outfits can share their expertise in high-end technology and health and safety, but may still have a thing or two to learn about secondary mineral
98-1368, the court reviewed EPA regulations classifying certain secondary mineral
processing materials as solid wastes depending upon how and for what period of time they were stored prior to being reused in an ongoing production process.
Alekseyev VA, Medvedeva LS, Prisyagina NI, Meshalkin SS, Balabin Al (1997) Change in the dissolution rates of alkali feldspars as a result of secondary mineral
precipitation and approach to equilibrium.
However, talc is present in submarine hydrothermal systems within active chimneys and massive sulfide mounds, where it was observed as secondary mineral
precipitates [50, 100, 101].