What is the miscellaneous test for the hornblende mineral?
What is the miscellaneous test for the hornblende mineral?
Homework Answers
Hornblende is the group of amphibole minerals that are associated with the metamorphic or igneous rocks and since they are a group of minerals with variation in the type of element that is present in them but the basic formula of hornblende is as follows:
(Ca,Na)2-3(Mg,Fe,Al)5(Si,Al)8O22(OH,F)2
The test for knowing hornblende minerals are:
- They are always dark in colour and most of the time they are black in color.
- Their two direction of cleavage plane intersect at 560 and 1240.
- The streak of the mineral is white to colourless.
- It have a vitreous lustre.
- At Mohr's hardenss scale, the hardness of different minerals varies from 5 to 6.
- Specific gravity varies from 2.9 to 3.5.
- The crustal system of different minerals is monoclinic.
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S is -2 oxidation state. The mineral is found in a mud solution,
see the following chemical equation which is under equilibrium in
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1) find the oxidation state of S, Fe, and H in each species of
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2) If the condition is at 25 degrees C, pH=4.2, Fe2+
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consider the solubility of a mineral. It is a FeS(s) mineral.
S is -2 oxidation state. The mineral is found in a mud solution,
see the following chemical equation which is under equilibrium in
the atmosphere. Btw S is -2 oxidation State.
1) If the condition is at 25 degrees C, pH=4.2, Fe2+
concentration is 4 ppm, and logK= 3.0. What is the partial pressure
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1) find the oxidation state of S, Fe, and H in each species of
the balance. is it an oxidation-reduction reaction?
2) If the condition is at 25 degrees C, pH=4.2, Fe2+
concentration is 4 ppm, and logK= 3.0. What is the partial pressure...
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