41:29

Underground Gold Mining in California | Hidden History and Riches

50:43

Death Valley Gold Mine

09:47

Structure of Metamorphic Rocks - Primary Structures of Metamorphic Rocks

11:09

Rock forming minerals - Characteristics of rock forming minerals

14:20

Shear zone - Formation of shear zone

16:32

Mylonite - Formation of Mylonite - Classification of Mylonites

18:15

Skarn zone - How is skarn zone formed - Characteristics of skarn zone

21:53

Gold mining : Past, present and future

05:25

How plate tectonics shapes mineral deposits

19:17

Rock deformation - how does rock deformation occur - types of rock deformation

11:13

Surface mining - Surface mining methods

22:11

Gold prospecting - How to do gold prospecting - Gold prospecting methods

12:20

How minerals form - process of mineral formation

15:38

igneous rock - formation of igneous rocks - examples of igneous rock

18:03

Gold ore - formation of gold ore - types of gold ore

12:17

How gold deposits form - Processes of gold deposits form

16:14

Alluvial gold deposits - formation process of alluvial gold deposits

19:37

Placer gold deposits - formation of placer gold deposits - characteristics of placer gold deposits

12:57

Which rocks contain gold ? - Economic and historical importance of gold-bearing rocks

21:24

Skarn gold deposits - Formation of skarn gold deposits - Characteristics of skarn gold deposits

15:53

Economic minerals - How are economic minerals formed?

09:25

Oxidized gold ore - How does oxidized gold ore occur?

08:37

Pegmatite - formation of pegmatite

13:36

biochemical sedimentary rocks - formation and properties of biochemical sedimentary rocks

14:29

galena mineral - formation of galena mineral - properties of galena mineral

08:52

epidote mineral - formation of epidote mineral - properties of epidote mineral

12:59

eolian deposits - formation of eolian deposits - characteristics of eolian deposits

15:20

metamorphism of ore deposits - formation of metamorphism of ore deposits

15:03

process of sedimentation - formation of process of sedimentation - types of process of sedimentation

13:55

antimony ore deposits - formation of antimony ore deposits - properties of antimony ore deposits

12:16

How is mineral formed ? - mineral formation environments

13:35

massive sulphide deposits - formation and properties of massive sulphide deposits -

14:09

igneous mineral deposits - formation and properties of igneous mineral deposits

17:12

sedimentary ore deposits - formation and characteristics of sedimentary ore deposits

14:30

Vein type mineral deposits - formation and mineralogical composition of vein type mineral deposits

13:21

copper ore deposits - formation of copper ore deposits - properties of copper ore deposits

12:39

gangue minerals - formation of gangue minerals

10:55

banded iron formations - properties of banded iron formations

11:18

agate mineral - formation of agate mineral - properties of agate mineral

14:50

pyrite mineral - formation of pyrite mineral - properties of pyrite mineral

11:34

definition of gneissic band - formation of gneissic band - features of gneissic banding

22:00

What are depth rocks - formation of depth rocks - properties and classification of depth rocks

19:50

placer ore deposits - formation of placer ore deposits - properties of placer ore deposits

17:13

definition of platinum ore deposits - formation and properties of platinum ore deposits

19:45

silver ore deposits - formation of silver ore deposits - properties of silver ore deposits

14:16

definition of lithium ore deposits - formation and properties of lithium ore deposits

12:37

definition of lead ore deposits - formation of lead ore deposits - properties of lead ore deposits

15:28

manganese ore deposits - formation and properties of manganese ore deposits

08:08

ripple mark definition - How is ripple mark formed - properties of ripple mark

09:54

graded bedding - how is graded bedding formed - What is the importance of graded bedding in geology?

09:45

stratigraphic correlation definition - principles of stratigraphic correlation

13:49

What are mud cracks - How do mud cracks form - types of mud cracks - Examination of mud cracks

15:36

tectonic environment - how is tectonic environment formed - properties of tectonic environment

11:01

What is chemical sedimentation - formation and process of chemical sedimentation

14:41

iron ore definition - formation of iron ore - characteristics of iron ore - iron ore types

11:16

Sulfide nickel deposits - formation and characteristics of sulfide nickel deposits

13:34

What is chemical sediment - Formation of Chemical sediments - Types of Chemical Sediments

16:06

mercury ore deposits - formation of mercury ore deposits - exploration and mining of mercury ore

15:51

mississippi valley type deposits

11:31

ore grade definition - ore grade estimation - ore grade calculation