Knowledge of the most important silicate minerals that characterize the rocks is a must-know for all gem-hunting enthusiasts, as distinguishing these minerals can help to access valuable precious and semi-precious stones in a simpler and easier way. We show you the most important silicate minerals that are characteristic of rocks in nature as follows:
1- Feldspar minerals
and it is considered one of the most important Minerals are most common in the Earth’s crust, amounting to more than % of its components, and is characterized by its light or white color and consists of aluminum silicate Al2Si2O8 in addition to varying amounts of calcium, sodium and potassium and is divided into two groups:
A- Potassic Feldspar: It is characterized by the presence of potassium KAlSi3O8, which includes orthoclase, microcline, sandin, and adeolaria minerals, and it is abundant in granite and rhyolite rocks. B- Plagioclase group:
The shape of the quartz mineral rocks
and it spreads in the rocks of the crust Continental and rare in the rocks of the oceanic crust and consists mainly of silicon oxide SiO2. It may contain some impurities that give it different and attractive colors, so it is considered one of the ornamental minerals, especially agate, which is characterized by its gray or yellow striped color with red or orange lines due to the presence of iron impurities.
It is the first mineral to crystallize in volcanic magma and consists mainly of silicate magnesium and iron (Fe, Mg)2SiO4. It is found in small quantities in the rocks of the continental and oceanic crust.
The shape of the rocks of the mineral pyroxene
is considered the most The primary component of oceanic crust rocks follows olivine in crystallization, and with olivine, most of the components of the mantle are.
The shape of the rocks of the mineral amphitabol
is very similar to pyroxene and is characterized by containing hydroxyl (OH) molecules. Which are found in pyroxene minerals.
The shape of mica rocks
It is distinguished by browsing and may be separated into little “layers” plates, and it is regarded as a frequent mineral in Continental rocks.