METAMORPHIC PETROLOGY (METAMORPHIC HYDROTHERMAL ALTERATION)

Question 1

Albite, Paragonite (Na-rich mica)

Answer 1

Albitic

Question 2

Alunite and Sulfate Minerals

Answer 2

Alunitic

Question 3

Kaolinite, Smectite , Illite

Answer 3

Argillic

Question 4

Carbonates, and accessory minerals such as chlorite, sericite and albite

Answer 4

Carbonatization

Question 5

Sericite, Quartz, Pyrite

Answer 5

Phyllic

Question 6

Biotite, K-felds, adularia

Answer 6

Potassic

Question 7

Chlorite, epidote, actinolite, tremolite

Answer 7

Propylitic

Question 8

Fine grained white mica

Answer 8

Sericitic

Question 9

Serpentine and Talc

Answer 9

Serpentinization

Question 10

Quartz and Chert

Answer 10

Silicification

Question 11

Albite

Answer 11

Spilitization

Question 12

Zeolite minerals

Answer 12

Zeolite

Question 13

High T alteration resulting from Na-enrhichment

Answer 13

Albitic

Question 14

Occurs in hot springs and Au&Cu porphyry deposits by oxidations of sulfides

Answer 14

Alunitic

Question 15

Low T decomposition of felds in acidic conditions which occurs in Au deposits hosted by sed rocks

Answer 15

Argillic

Question 16

Replacement by carbonate minerals at variable temps

Answer 16

Carbonatization

Question 17

Decompostion of silicic rocks associated with PCDs

Answer 17

Phyllic

Question 18

High T alteration of silicic magma resulting to K enrichment which commonly underlies phyllic zones

Answer 18

Potassic

Question 19

Low to Mod T decomposition of basic and ultrabasic rocks enriched in Pyx, Amph, Bio, and Plagw hich usually occurs in PCDs

Answer 19

Propylitic

Question 20

Alteration of feldspars

Answer 20

Sericitic

Question 21

Low T alteration of basic and ultrabasic rocks

Answer 21

Serpentinization

Question 22

Replacement by silica minerals at variable temps

Answer 22

Silicification

Question 23

Low temp alteration of Ca-Plag to alibite

Answer 23

Spilization

Question 24

Low temp replacement of glass in volcanic rocks

Answer 24

Zeolite