Cassiterite

States because of its vibrant blue color" (Branstrator). The blue topaz is the birthstone of those who were born in December. The blue topaz has also been a part of history, dating back to the Egyptians (Topaz History). The blue topaz is one of the most unique, fashionable, historical, and incredible gemstones on planet earth. The Blue topaz is found in the enormous crystals in pegmatite dikes (Topaz). Pegmatite dikes comprise extremely coarse crystalline granitic rocks (Dike ( Geology )). It can also be found in rhyolite, gneisses, and schists which are very acidic (Topaz)." Topaz crystallizes from fluorine-rich vapor in the final stages of solidification of igneous rock" (Topaz). Topaz can also be found in locations that consist of cassiterite and fluorite (Brannan). "These areas are most often found where rhyolite lava is commonly found or where granitic pegmatites occur" (Brannan). The topaz can be found in places all over the world including: North America, Australia, Africa, Asia, and South America (Brannan). However the blue topaz can be found in the Ural Mountains near Sverdlovsk (Gems and Gem Materials ). Topaz can come in a variety of colors. Topaz can be found as red, yellow, pale gray, a reddish-orange or blue brown, however, pure topaz is clear (Topaz). It can also be white, pale green, blue, gold, pink, reddish-yellow or opaque to transparent/translucent (Topaz)". The most common color is yellow with a red tint and the most valuable is pink and…

The earliest of these attempts is the Conflict Coltan and Cassiterite Act of 2008. Sponsored by Senator Sam Brownback (R- Kansas), this act required the President to formulate a list of armed groups in the DRC that commit human rights violations, as well as sought to completely ban the importation of minerals that benefit said groups. The bill also proposed civil and criminal penalties for those who violated it. Although the bill garnered a fair amount of support, it died in committee at the end…

CHAPTER 1 TIN OXIDE 1.1 Introduction Tin dioxide, also known by the systematic name tin(IV) oxide and stannic oxide in the older notation, is the inorganic compound with the formula SnO2. The mineral form of SnO2 is called cassiterite, and this is the main ore of tin. With many other names, this oxide of tin is the most important raw material in tin chemistry. This colorless, diamagnetic solid is amphoteric. 1.2 Structure It crystallises with the rutile structure, wherein the tin atoms are six…

It is a known truth that – A man who is devoid of ethics can prove out to be a demon, which is let free into the world. This phrase can be paralleled to a group of individuals who have a paucity of ethics, yet are living free in this competitive world. Blood in the mobile, is a great work of documentary by Frank Poulsen, which revolves around the reckless extraction of minerals. The mineral in the name of ‘Cassiterite’ is mined by unethical means in the Eastern Democratic Republic of Congo. An…

States because of its vibrant blue color" (Branstrator). The blue topaz is the birthstone of those who were born in December. The blue topaz has also been a part of history, dating back to the Egyptians (Topaz History). The blue topaz is one of the most unique, fashionable, historical, and incredible gemstones on planet earth. The Blue topaz is found in the enormous crystals in pegmatite dikes (Topaz). Pegmatite dikes comprise extremely coarse crystalline granitic rocks (Dike ( Geology )). It…