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1. KING ABDUL AZIZ UNIVERSITY
FACULTY OF MARINE SCIENCES
DEPARTMENT OF MARINE GEOLOGY
CLASS ACTIVITY 1
:‫الجامعى‬ ‫الرقم‬ :‫الطالب‬ ‫اسم‬
COURSE TITLE: Marine Mineral Resources COURSE CODE: MG491
DATE: 15/ 3/ 1445 SEMESTER: 1 TOTAL ASSESSMENT MARKS 3 TIME ALLOWED: 1 HOUR
Answer the following questions (3 marks; each 0.1)
1 …………………is a naturally occurring, solid, inorganic substance that has distinctive
physical properties and a composition that can be described by a chemical formula.
The definition of mineral by mineralogist
The definition of mineral by economist
The definition of mineral as a resource
The definition of mineral by ore deposit specialists
2 ………………………refers to a commercially traded good (material) derived from a
naturally occurring, non-living, organic or inorganic, solid, liquid, or gaseous
substance
The definition of mineral by economist
The definition of mineral by mineralogist
The definition of mineral as a resource
The definition of mineral by ore deposit specialists
3 ……………………. refers to naturally occurring, non-living, organic or inorganic,
solid, liquid, or gaseous substances useful, or believed to be potentially useful, to man
The definition of mineral as a resource
The definition of mineral by economist
The definition of mineral by mineralogist
The definition of mineral by ore deposit specialists
4 The term ……………………. refers to solid explored and developed substances
currently recoverable at a profit.
Ore
Mineral
Rock
resource
5 Which of the following mineral resources occur on continental shelf…….
Phosphorite
Mn-nodules
Cobalt crust
Metalliferous deposits
6 Which of the following mineral deposits are derived mainly from a continental source
Placer deposits
Metalliferous deposits
Cobalt crust
Mn-nodules
7 In terms of marine mineral resources, placer deposits are classified as
Minerals from terrestrial sources
Minerals from marine sources
Minerals from both marine and non-marine sources.
Minerals from hydrothermal origin

2. 8 Marine mineral resources are classified according to their origin. Which of the
following mineral resources are classified as marine mineral resource of terrestrial
origin:
Phosphorites
Polymetallic nodules
Metalliferous Sediments.
Sea-floor Massive Sulfides
9 Marine mineral resources are classified according to their origin. Which of the
following mineral resources are classified as marine mineral resource of terrestrial
origin:
Marine Solutes
Polymetallic nodules
Metalliferous Sediments
Sea-floor Massive Sulfides
10 Marine mineral resources are classified according to their origin. Which of the
following mineral resources are classified as marine mineral resource of terrestrial
origin:
Marine Sand and Gravel
Polymetallic nodules
Metalliferous Sediments
Sea-floor Massive Sulfides
11 Marine mineral resources are classified according to their origin. Which of the
following mineral resources are classified as combined terrestrial and deep ocean
origin:
Polymetallic nodules
Placer deposits
Metalliferous Sediments
Sea-floor Massive Sulfides
12 Marine mineral resources are classified according to their origin. Which of the
following mineral resources are classified as combined terrestrial and deep ocean
origin:
Cobalt Crusts
Placer deposits
Metalliferous Sediments
Sea-floor massive sulfides
13 Marine mineral resources are classified according to their origin. Which of the
following mineral resources are classified as ocean origin:
Sea-floor massive sulfides
Placer deposits
Phosphorites
Cobalt-rich Ferromanganese Crusts
14 The fluviatile placers, that is recovered from near-shore and offshore sediments in the
“tin-valleys of the Indonesian Sunda shelf is rich in mineral:
Cassiterite
Rutile and ilmenite
Magnetite
Diamonds
15 The marine mineral resources that can be used as a good natural or artificial fertilizer:
Phosphorites
Marine solutes
Marine gravel and sands
Cobalt-rich Ferromanganese Crusts

3. 16 Marine sedimentary phosphorites are rich in mineral:
carbonate fluorapatite
Cassiterite
Rutile
Zircon
17 A type of phosphorites forms mainly by accumulations of sea-fowl and cave-dwelling
mammals at low latitudes are called:
Guano
carbonate fluorapatite
Mn nodules
Marine solutes
18 A type of marine mineral resources common in areas of upwelling-related increased
marine productivity:
Phosphorites
Cobalt-rich Ferromanganese Crusts
Mn nodules
Marine solutes
19 A type of surficial mineral deposit formed by the mechanical concentration of mineral
particles from weathered debris:
Placer deposits
Phosphorites
Mn nodules
Co crust
20 ……………….are rock-hard, metallic layers form at depths of 1000 to 3000 metres
on the flanks of submarine volcanoes.
Cobalt crust
Mn-Nodules
Massive sulphides
Phosphorites
21 Ti-bearing mineral in placer deposits include:
Rutile & Ilmenite
Zircon & Tourmaline
Gypsum & calcite
Cassiterite & Monazite
22 Which of the following minerals are not common in placer deposits
Gypsum
Zircon
Monazite
Rutile
23 Manganese nodules are classified as marine mineral deposits from terrestrial sources
False
True
24 Marine evaporite deposits are rich in heavy minerals
False
True
25 A mineral is defines by mineral economist as commercially traded good (material)
derived from a naturally occurring, non-living, organic or inorganic, solid, liquid, or
gaseous substance
False
True
26 The Manganese nodules are usually found up to a depth of the continental shelf
False

4. True
27 Indian Ocean contains the largest reserve of Mn-nodules
False
True
28 Phosphorites have been found on the shelves on the western sides of continents as a
result of divergent upwelling
True
False
29 The mining process of Mn-nodules is easier than that of cobalt crust
True
False
30 Ilmenite in placer deposits is a major source for tin
False
True