Minerals Day 3 2/9/11

MINERALS _____________________are the basic building blocks of ___________________! But what is a mineral? – ___________________Occurring – ______________Substance – Orderly Crystalline ______________________ – Definite Chemical _______________________ – Generally considered ____________________

MINERALS – Is it a mineral? Answer these on that same sheet of paper 1. Why would ice be considered a mineral, but water would not? 2.Is coal considered a mineral? Explain. 3.When you “grow a crystal” from a kit, are you creating a mineral? Explain.

Mineral Formation Minerals are formed in a few ways: – ___________________________________from magma – ___________________________ – _______________and Temperature (within the ______________) – Hydrothermal Solutions Minerals formed by the crystallization of magma

Mineral Formation For each of these ways a mineral is formed, the bottom line is that elements are bonding together. Today we are going to talk about the how they are categorized according to which elements are bonded together.

Mineral Formation Mineral Groups _____________________________________ _________________________. We will discuss 6 mineral groups today and how you can know which groups minerals belong to based on their _____________________________________

2.2 Minerals 1. Silicates _________________and ______________combine to form a structure called the silicon-oxygen tetrahedron. This silicon-oxygen tetrahedron provides the framework of every silicate mineral.

2.2 Minerals 1. Silicates Use the periodic table to find the symbol for Silicon. Use the table to find the symbol for oxygen. Whenever you see these symbols together in a compound it will be classified as a silicate. Example: Orthoclase Feldspar - KAlSi 3 O 8 What other elements do you see in this compound? Other examples: Quartz – __________

SiO 2 - Quartz – used to make glass and gemstones. It is one of the most abundant minerals found on earth!

KAlSi 3 O 8 - Feldspar – makes porcelain and china

Mineral Groups 2.2 Minerals 2. Carbonates Minerals that contain the elements _____________, ______________, and one or more other ________________elements Aragonite – a collectors item

Mineral Groups 2.2 Minerals 3. Oxides Minerals that contain _________________ and one or more other elements, which are usually metals

Oxides Ice and snow Zincite – used in semiconductors

Mineral Groups 2.2 Minerals 4. Sulfates and Sulfides Minerals that contain the element ______________ 5. Halides Minerals that contain a __________________ ion plus one or more other elements 6. Native elements Minerals that exist in ________________________ Name 3 examples of Native Elements:

Sulfides Galena – mined for lead Pyrite – “fool’s gold” – mined for iron

Pure Element – Copper (Cu) Galena – mined for lead

Applying Mineral Groups To which mineral group do each of the following minerals belong: 1.Bornite (Cu5FeS4) 2.Cuprite (Cu2O) 3.Magnesite (MgCO3) 4.Barite (BaSO4) Answer individually, after 5 minutes you will compare with a partner.

Vocabulary and Make-up Work For the remainder of the time you will be working on: – Make up work, this could include: Article Report (DUE FRIDAY) Periodic Table chart from MONDAY Isotopes and bonds from TUESDAY – Unit 2 (Chapter 2+3) vocabulary – this is DUE MONDAY!