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- Sierra Leone (10596 bytes)
1: ...public of Sierra Leone''' is a country in [[West Africa]], on the coast of the [[Atlantic Ocean]]. The...
14: ...'[[List of state mottos|National motto]]: Unity - Freedom - Justice''</small>
22: | [[Freetown]]
43: | ''[[High We Exalt Thee, Realm of the Free]]''
54: ... a source for [[slave|slaves]], but in [[1787]] [[Freetown]] was established as a city for former slav... - List of minerals (11610 bytes)
88: #[[Burmite]] (amber from Burma)
188: #[[Franckeite]]
189: #[[Franklinite]] (spinel group)
377: #[[Rutile]]
516: #[[Wolframite]] - Sedimentary rock (7917 bytes)
1: [[Image:Limestoneshale7342.JPG|frame|right|Two types of sedimentary rock: limey [[s...
3: ...esults of biogenic activity; and by precipitation from [[solution]]. Sedimentary rocks include common ...
6: Sedimentary [[rock (geology)|rock]]s are formed from [[overburden pressure]] as particles of [[sedim...
14: ...discrete fragments or clasts of materials derived from other rocks. They are composed largely of [[qu...
22: ...with quartz, clay, feldspar, and metamorphic rock fragments present. - Titanium (20884 bytes)
115: ...n numerous minerals with the main sources being [[rutile]] and [[ilmenite]], which are widely distributed ...
118: ... point]] of this element makes it useful as a [[refractory metal]]. Titanium is as strong as steel, bu...
125: ... titanium dioxide are excellent reflectors of [[infrared radiation]] and are therefore used extensivel...
143: ...erman]] chemist [[Martin Heinrich Klaproth]] in [[rutile]] ore. Klaproth confirmed it as a new element and...
145: The metal has always been difficult to extract from its various ores. Pure metallic titanium (99.9%... - Zirconium (9876 bytes)
159: ...mbles [[titanium]], zirconium is obtained chiefly from [[zircon]] and is very corrosion resistant. Zir...
165: ... (Zr[[silicon|Si]][[oxygen|O]]<sub>4</sub>) are refractories, foundry sands (including [[Casting#Inves...
170: ...nd by the ceramic and [[glass]] industries as a refractory material.
177: Zirconium ([[Arabic language|Arabic]] ''zark?from [[Persian language|Persian]] ''zarg?meaning "go...
179: ...in a new element until Klaproth analyzed a jargon from [[Ceylon]] in the [[Indian Ocean]]. He named t... - Sedimentary rocks (7917 bytes)
1: [[Image:Limestoneshale7342.JPG|frame|right|Two types of sedimentary rock: limey [[s...
3: ...esults of biogenic activity; and by precipitation from [[solution]]. Sedimentary rocks include common ...
6: Sedimentary [[rock (geology)|rock]]s are formed from [[overburden pressure]] as particles of [[sedim...
14: ...discrete fragments or clasts of materials derived from other rocks. They are composed largely of [[qu...
22: ...with quartz, clay, feldspar, and metamorphic rock fragments present. - Mineral (10947 bytes)
1: ...neral structures]]. Minerals range in composition from pure [[Chemical element|element]]s and simple [...
3: [[Image:minerals.jpg|right|frame|Photo from [http://volcanoes.usgs.gov/Products/Pglossary/m...
7: ...lase]] [[feldspar]]s comprise a continuous series from [[sodium]]-rich [[albite]] (NaAlSi<sub>3</sub>O...
11: ... [[lead]] and [[sulfur]]) and [[periclase]] (made from [[magnesium]] and [[oxygen]]) all share the sam...
20: ...found in a handful of samples, and many are known from only one or two small grains.
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