Please answer all parts Mineral Groups 2) Two students are debating the classifi

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Please answer all parts

Mineral Groups 2) Two students are debating the classification of graphite (chemical formula: C). Student 1: think that graphite belongs in the "Other" category. It has carbon, but it doesn't have oxygen, so it's not a carbonate. Student 2: But the word "carbonate" has the word "carbon' in it! I think that if any mineral has carbon in its chemical formula, it must be a carbonate. With which student do you agree? Why? a) Pencil lead is made of graphite. What about the appearance of graphite indicates that it is in the "Other" mineral group? b) What is the classification of hematite (Fe203)? Explain your answer using the key elements in the chemical formula c Muscovite mica (KAI2AISi3010(OH2) has nearly the same chemical formula as biotite mica (K(Mg, Fe)3AISi3010 (OH)2). They both form crystals that are platy sheets. Based on their chemical formula, predict how they are different in appearance. d) The igneous rock gabbro is made up primarily of ferromagnesian silicate minerals. Predict what gabbro looks like. Explain your answer.

Explanation / Answer

1) student1 is right, because a carbonate conatains both carbon and oxygen but here graphite only contains carbon element

2) its appearence is non metallic so it falls under other group.

3) hematite is an oxide mineral, the key elements are fe and oxygen

4) because boitite contains fe and mg minerals it has darker appearence while mica has light colored appearence

5) black or dark in color as it contains fe mg minerals

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