This presentation explains about the different states of sulfur and their occurrences.

1. March 19, 2015 1
Chemistry Story board
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Natural Occurrence of
Sulphur28.01.01
8005
Learning objectives
The learner is able to
1. recollect the historical uses of sulphur
2. know the different states of sulphur
3. know the presence of free sulphur in volcanic areas
4. know the occurrence of sulphur various places in the
world
5. list the combined states (ores) of sulphur

2. March 19, 2015 2
Chemistry Story board
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Natural Occurrence of
Sulphur28.01.01
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Sulphur means “burning stone” in Latin.
1. History of Sulphur
Boiling sulphur on earthBoiling sulphur on earth
Explanation

3. March 19, 2015 3
Chemistry Story board
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Natural Occurrence of
Sulphur28.01.01
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Romans have used sulphur fumes to purify sick room .
1. History of Sulphur
Sulphur caveSulphur cave
Explanation

4. March 19, 2015 4
Chemistry Story board
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Natural Occurrence of
Sulphur28.01.01
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Sulphur was used in war as gun powder.
1. History of Sulphur
Explanation
Gun powder

5. March 19, 2015 5
Chemistry Story board
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Natural Occurrence of
Sulphur28.01.01
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2. Different States of Sulphur
Sulphur occurs in free state and in combined state.
Combined
state
Free state
Explanation

6. March 19, 2015 6
Chemistry Story board
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Natural Occurrence of
Sulphur28.01.01
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Free sulphur is present in volcanic areas.
4. Free states
Volcanoes

7. March 19, 2015 7
Chemistry Story board
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Natural Occurrence of
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5. Sulphur deposits in the world
Louisiana and Texas have the largest deposits of sulphur in United
States.

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Natural Occurrence of
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Sicily and Japan have some sulphur deposits.
5. Sulphur deposits in the world

9. March 19, 2015 9
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Iron pyrites is one of the important ores of sulphur.
Combined states
Iron pyrites (FeS2)

10. March 19, 2015 10
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Copper pyrites another important ore of sulphur.
Copper pyrites (CuFeS2)
5. Combined states

11. March 19, 2015 11
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Zinc blende and lead sulphide are another ores of sulphur.
Zinc blende (ZnS) Galena (PbS)
5. Combined states

12. March 19, 2015 12
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Calcium sulphate contains sulphur.
Gypsum (Calcium sulphate dihydrate)
5. Combined states

13. March 19, 2015 13
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Recap
Summary:
• Sulphur has been used 4000 years ago
• Free sulphur is present in volcanic areas
• Sulphur deposits are present in huge quantities in
U.S., Italy and Japan
• The important ores of sulphur are iron pyrites, copper
pyrites, zinc blende, Galena and Gypsum.