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Minerals Report - International Seabed Authority

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Table 1: Classification of marine mineral resources (modified from 23 and 25)<br />

Region ORIGIN Unconsolidated<br />

(Mineral)<br />

Continental Margin (shelf, slope and rise)<br />

Terrigeneous<br />

(derived by<br />

erosion of<br />

continental<br />

rocks)<br />

Biogenic<br />

(produced by<br />

organisms)<br />

Non-metals:<br />

Beach deposit:<br />

Siliceous sand and<br />

gravel (quartz)<br />

Placer deposit:<br />

Diamond<br />

Metals:<br />

Placer deposit: heavy<br />

mineral and native<br />

metal concentrates<br />

Barium (barite,<br />

witherite)<br />

Chromium (chromite)<br />

Gold<br />

Iron (hematite,<br />

magnetite, siderite)<br />

Rare Earth Elements<br />

(monazite, basanite)<br />

Tin (cassiterite)<br />

Titanium (ilmenite,<br />

rutile)<br />

Thorium (monazite)<br />

Tungsten (scheelite,<br />

wolframite)<br />

Zirconium (zircon)<br />

Beach deposit: Lime<br />

(calcite, aragonite)<br />

Mud, sand shells<br />

Precious coral<br />

Pearl (primarily<br />

cultured)<br />

Mode of occurrence<br />

Consolidated Fluid Heat<br />

Coal<br />

Limestone<br />

Gas hydrates<br />

(methane)<br />

Sulphur (pure<br />

and as sulphate)<br />

Seawater solutes:<br />

Salt (halite, sodium<br />

chloride)<br />

Magnesium<br />

Magnesium<br />

compounds<br />

Bromine<br />

Others:<br />

Bicarbonate<br />

Boric acid<br />

Calcium<br />

Fluorite<br />

Potassium<br />

Strontium<br />

Sulphate<br />

Thorium<br />

Petroleum (oil and<br />

gas)<br />

INTERNATIONAL SEABED AUTHORITY 70

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