Calcite is a mineral that is formed from the reaction of calcium and carbon to form(CaCo3), and occurs in granular or compact shapes, exhibiting a white color in pure form or grey, blue ,black, red ,yellow or orange if it has some impurities. Due to its carbon nature, it can…
The calcites are usually transparent or opaque and have traces of phosphorescence and/or fluorescence hence when used to view objects, they appear double. This is why its use for optical purposes.
It occurs naturally owing to the marine decomposition of hard planktons like red algae, echinoderms, and sponges and it is found in limestone, volcanic, kimberlites, sedimentary or peridotites. It is used especially in military for in gun sights .It has also agricultural uses like stabilization of soil and concrete repair.
Marcasite or white iron pyrite is a product of iron (Fe) and sulphur (s), to form Iron sulfide (Fes3). It has black metallic appearance and changes to brown or yellowish color. Its occurrence is primary or secondary in nature. Primarily, it occurs in highly acidic and with low temperatures conditions, mainly on sedimentary rocks or hydrothermal veins. In secondary, it is formed on alteration of chemicals of a parent mineral such as chalcopyrite. It reacts in high humidity to form iron (II) suphate and sulphuric acid. It is used mainly used for ornamental purposes and a source of sulphur.
Galena is the natural form of the mineral lead sulphide and is the main ore for both silver and lead. It is also called lead glances and distributed widely on the sulphide minerals. It is mainly used to make lead- acid batteries, lead sheets and ...
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(Geology Essay Example | Topics and Well Written Essays - 250 Words - 8)
“Geology Essay Example | Topics and Well Written Essays - 250 Words - 8”, n.d. https://studentshare.net/miscellaneous/659603-geology.
How many existed in the Eocene? Explain and list. According to Harris et al. there are currently approximately 7,000 islands and islets in the Caribbean however during the mid-Eocene era the region had assumed its modern geographic configuration. From this perspective it remains the cast that although there are several thousand islands and islets many of these become submerged during high tides.
Geology Name Tutor Institution Subject Code Date of Submission Introduction Ores are types of naturally existing rocks having minerals and metal components. It is also known as a metalliferous mineral, which means it is composed of metals and iron components, whose nature and form is largely dependent on the amount of individual components forming it (Green & Basher, 2009 p 124)1.
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There exist four forms of coal
We learnt from the experienced miners about the mining methods, the history of Colorado, geology mine in totality, and the lives of the gold fever leaders in the 18th century. The trip also enabled us to test the early tools and pay attention to Tommy