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When spaces between particles are filled by silica rust or calcite?
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The fossilizing process that replaces organic matter with silica or calcite is?
petrifaction
What are altered remains?
Petrified wood is an example of altered remains. The pores of the wood are filled in with silica.
Where do mafic and felsic magma originate?
Felsic is a term that means that a rock contains types of silica. Fesic magma is magma that is high in silica particles and low in iron particles.
What is the difference between silica and quartz?
Quartz is a naturally occurring form of silica that often contains impurities.
What is silica dust?
Crystalline silica is a basic component of soil, sand, granite, and many other minerals. Quartz is the most common form of crystalline silica. Cristobalite and tridymite are two other forms of crystalline silica. All three forms may become respirable size particles when workers chip, cut, drill, or grind objects that contain crystalline silica.
Is calcite silica rich or silica poor?
Calcite does not contain any silica. It is a carbonate mineral.
What are the subgrops of sponges?
calcarea - have calcite spicules, often have calcite exoskeletons glass sponges - silica spicules, no exoskeleton demosponges - silica spicules, may have exoskeleton, made of aragonite if present
A cherty limestone would contain which major constituents?
silica, calcite
The fossilizing process that replaces organic matter with silica or calcite is?
petrifaction
Name 3 types of cement in sand stone?
Clay minerals, calcite, and silica.
What are three natural cements?
1. Silica (quartz) 2. Calcite (limestone) 3. Clay
What cements together the particles of a stone?
Sedimentary rock particle cements would include iron, calcite, silica, and clay minerals. Igneous and metamorphic rocks are held together by minerals that have crystallized from magma or from recrystallization of existing minerals.
Is silica thick?
Silica in natural form can be both particles or thick on fusion as in felsic magma origin
What are altered remains?
Petrified wood is an example of altered remains. The pores of the wood are filled in with silica.
Why do sandstones cemented with calcite usually weather much more rapidly than sandstone cemented by silica?
The cementing mineral calcite is not resistant to chemical dissolution by naturally acidic rainwater as is the cementing silicate mineral.
What is colloidal silicon?
Sometimes referred to as a sol or silica sol, colloidal silica consists of a stable dispersion amorphous silica particles. To achieve this, the silica particles must be small enough such that they are largely unaffected by gravity. Therefore, silica particle sizes are usually of the order of less than 100 nanometres. The term colloid refers to the suspension, where the sols are the tiny discrete particles in suspension. Colloidal silica's can be manufactured from materials such as sodium silicate and are usually available in varying concentrations to suit various applications
Stalactites and stalagmites consist of deposits of?
silica. +++ Wrong. They are of the mineral Calcite: crystalline calcium carbonate derived from the limestone above the cave.
