How do you identify chlorite in a thin section?
How do you identify chlorite in a thin section?
Chlorite thin section
- Formula: (Mg,Fe)3(Si,Al)4O10(OH)2 • (Mg,Fe)3(OH)6
- System: Monoclinic.
- Color: Green, yellowish green, olive green, blackish green, bluish green, white, pink.
- Lustre: Greasy, Pearly, Dull.
- Hardness: 2–2½
- Density: 2.6–3.3.
What is the transparency of chlorite?
Metamorphic rocks rich in chlorite might include phyllite and chlorite schist….
| Physical Properties of Chlorite | |
|---|---|
| Chemical Classification | Silicate |
| Luster | Vitreous, pearly, dull |
| Diaphaneity | Transparent, translucent, opaque |
| Cleavage | Perfect in one direction |
What is the characteristics of chlorite?
THE PHYSICAL CHARACTERISTICS OF CHLORITE: Color is usually green but can also be white, yellow, red, lavender and black. Luster is vitreous, dull or pearly. Transparency: Crystals are translucent transparent. Crystal System is monoclinic; 2/m.
How can you tell if biotite is thin?
In thin section, biotite exhibits moderate relief and a pale to deep greenish brown or brown color, with moderate to strong pleochroism. Biotite has a high birefringence which can be partially masked by its deep intrinsic color.
How can you identify an olivine in a thin section?
Distinguishing Features Olivine is commonly recognized by it high retardation, distinctive fracturing, lack of cleavage, and alteration to serpentine. Colorless to olive green in thin section.
How do you identify an epidote in a thin section?
In thin section, the generally small epidote grains appear with high relief, poor, parallel cleavage, a yellow-green adsorption colour and some pleochroism in green. Clinozoisite shares the has high relief and poor cleavage, but exhibits a weaker adsorption colour and is sometimes colourless.
What is the formula of chlorite?
Chlorite
| PubChem CID | 197148 |
|---|---|
| Molecular Formula | ClO2- |
| Synonyms | CHLORITE Chlorite ion 14998-27-7 UNII-Z63H374SB6 Z63H374SB6 More… |
| Molecular Weight | 67.45 |
| Dates | Modify 2021-10-23 Create 2004-09-16 |
What is the importance of chlorite?
Chlorites characteristically occur as alteration products of other minerals. They are common rock-forming minerals in clastic sediments and in hydrothermally altered igneous rocks; chlorites are widespread and important constituents of such metamorphic rocks as greenschists or chlorite schists.
What is chlorite used for?
The main application of sodium chlorite is the generation of chlorine dioxide for bleaching and stripping of textiles, pulp, and paper. It is also used for disinfection of municipal water treatment plants after conversion to chlorine dioxide.
Why does olivine have no cleavage?
Light green, glassy, often granular, as is this specimen, no cleavage. Constructed of isolated silica tetrahedra held together ionically by iron and magnesium ions. With no planes of weakness there is no cleavage, and because the crystals grow outward in all directions from a tetrahedral seed they are granular.
How can you tell the difference between olivine and epidote?
Epidote looks like green quartz, but is softer than quartz and does have a cleavage. Epidote can resemble olivine, however olivine is not found with quartz while epidote is often found with, and at times even embedded in, quartz.
What charge does chlorite have?
-1
Chlorite is a chlorine oxoanion and a monovalent inorganic anion. It is a conjugate base of a chlorous acid….3.1Computed Properties.
| Property Name | Property Value | Reference |
|---|---|---|
| Heavy Atom Count | 3 | Computed by PubChem |
| Formal Charge | -1 | Computed by PubChem |