Cr and Cu

Question 1

Commercil chromite ores must contain more than

Answer 1

45% Cr2O3

Question 2

Cr:Fe ratio of metallurgical grade

Answer 2

2.5:1

Question 3

Cr:Fe ratio of refractory grade

Answer 3

2.5:2

Question 4

Cr:Fe Ratio of chemical grade

Answer 4

1.6:1

Question 5

Cr specific grav

Answer 5

7.17

Question 6

Cr hardness

Answer 6

8.5-9

Question 7

Associated minerals with Cr

Answer 7

Olvine, Talc, Serpentine, Uvarovite, Pyroxene, Biotite, Magnetite, Anorthite

Question 8

Cr comrpises ___% of stainless steel

Answer 8

10%

Question 9

Main ore of Chromium found in Ultramafics

Answer 9

Chromite (FeCr2O4)

Question 10

Chromite deposits formed by igneous processes

Answer 10

Orthomagmatic Deposits

Question 11

Examples of Residual/Transported Cr Deposits

Answer 11

Alluvial, placer deposits
Laterite deposits

Question 12

Cu Density

Answer 12

8.96

Question 13

Chalcopyrite

Answer 13

CuFeS2

Question 14

Bornite

Answer 14

Cu5FeS4

Question 15

Covellite

Answer 15

CuS

Question 16

Chalcocite

Answer 16

Cu2S

Question 17

Malachite

Answer 17

Cu2CO3(OH)2

Question 18

Azurite

Answer 18

Cu3(CO3)2(OH)2

Question 19

Chrysocolla

Answer 19

CuSiO3-2H20

Question 20

Cuprite

Answer 20

Cu2O

Question 21

Luzonite & Enargite

Answer 21

Cu3AsS4

Question 22

the declining Cu production trend in the 1990s and 2000s can be attributed to what event

Answer 22

Marcopper Disaster of 1996

Question 23

The age of Porphry Cu types in the Ph

Answer 23

Cret to Pleisto

Question 24

Host rock of Carmen Copper

Answer 24

Lutopan Diorite

Question 25

Types of VMS deposits

Answer 25

>-Kuroko Type -Cypruss Type -Besshi (Kiesbeger)

Question 26

Kuroko Type Characteristic

Answer 26

Vein Type

Question 27

Cyprus Type Characteristic

Answer 27

Massive

Question 28

Besshi Type Characteristic

Answer 28

Strata bound Lenticular Metamorphism of Kuroko and Cypruss

Question 29

Vein type Cu characteristics

Answer 29

fissure and breccia fillings along fracture and fault zones Luzonites and Enargites