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Name: ____________________________ Compound Minerals Silicates o The most _____________________ class of minerals o Make up ______% of all known minerals and ______% of earth’s crust o Called “silicates” because… ________________________________________________________________________ o _______________________ is the second most common mineral in earth’s crust. o Feldspar is the ________________ common mineral in the crust. o List 4 other silicates: ________________________________________________________________________ Oxides o Composed of _____________________ and another element, usually a _____________ o Important ___________________________ because they are a source of metals o List 4 significant oxides: ________________________________________________________________________ o Name one use for each mineral below using the table on page 379. Magnetite – Pyrite – Anhydrite – Calcite – Copper – Halite – Sylvite – Sulfides o Composed of one or more __________________ and ________________________ o Contain metals that are ______________________________ important o Many are ____________________ (meaning you cannot see through them) o Have characteristic ____________________ and often colored _________________ o What kind of ore are each of the following sulfides? (in other words… Which metal can be extracted from each?) Galena – Chalcocite – Cinnabar – Realgar – Stibnite – Carbonates o Contain a ___________________ ion and the ______________________________ ion o When hydrochloric _____________ is applied to a carbonate mineral, _________________ plus __________________________________ is always produced. This is seen as ______________________ of gas. o This procedure is called an _________________________________, and is used to identify carbonates. o A common carbonate is ________________________, which is found in limestone. Artificial Gems o What term is used to describe gemstones that are not genuine (real)? o The two common imitations are either made of 1. ___________________________________________________________ or 2. ___________________________________________________________ o Substitute gems may look beautiful, but they lack the ____________________ and ________________________ of true gems due to their different ___________________ ________________________ and _______________________ make-up. o Diamonds are made of the main element (carbon) that is found in ___________ and in sugar. o In order to make a synthetic diamond, temperatures higher than __________________ and pressures of ____________________________________ were needed. o Artificial diamonds are now made that are comparable with genuine stones in both ______________________ and ______________________. o ____________________ were the first synthetic stones produced by melting ingredients and letting them cool into crystals. o Synthetic emeralds take ____________________ to form. o Artificial gemstones are much less _________________________ o We can imitate God’s handiwork, but His are always more ________________________