Sentence examples for minerals are often from inspiring English sources

The larger crystals of feldspar and ferromagnesian minerals are often visible to the naked eye; they lie in a finer groundmass, usually crystalline, but sometimes glassy.

However, direct measurement and estimation of heterogeneously distributed minerals are often costly and difficult to obtain.

The clay minerals are often the primarily radiation sources in the formations [11].

Applied clays and clay minerals are often modified by cation exchange with inorganic cations (soda- and acid-activation) and organic cations, mainly long-chain alkylammonium ions.

Since Ni-bearing minerals are often finely disseminated through laterite ores, liberation of minerals either high and/or low in Ni content is a prerequisite prior to any form of separation process.

However, real rock systems are mostly in various non-equilibrium states, particularly during retrograde stages (when rehydration reactions generally occur), and in which intrinsically unstable minerals are often preserved as relict minerals.

Three-dimensional μ-CT reconstructions of partially mineralized Alvinella spp. tubes showed that minerals were often concentrated along a longitudinal surface of the tubes (Fig. 3B) (in Specimens 44, 46, 48, 49), which in one tube (Specimen 44) was known to have been the side that was directly attached to the vent chimney.

The purity of minerals is often assessed in this way, as are things like the amount of fat in milk or salt in water.

Food Zn content is very important for human health as the artificial supplementation of foods with essential minerals is often difficult to achieve, particularly in developing countries.

Although the colour of a freshly broken surface of a metallic mineral is often highly diagnostic, this same mineral may become tarnished with time.

Problems often occur in shales that are rich in swelling clay minerals, and are often associated with high pore pressure.