to determine whether something is a mineral, we ask 4 questions: to determine whether something is a...
TRANSCRIPT
To Determine Whether Something is a Mineral,We Ask 4 Questions:
_______________________________?
__________________________________?
____________________________________?
______________________________________________________________?
If the answer to ALL 4 QUESTIONS is YES…It’s a _________________________!
NO
NO
NO
NO Not
a M
iner
al
How Many Minerals ARE THERE?• Over ____________ minerals occur naturally
on earth
• LESS THAN _______ MINERALS ARE COMMON
• “Common” minerals are called “_________ _________________Minerals” because they form the rocks that make up Earth’s crust
• Common Rock Forming Minerals: ____________, Calcite, ____________, Halite, Gypsum
How Do Minerals Form?• Two Most Common Ways: – From cooling____________ or ____________
– From the _______________________ of mineral-rich water
• Minerals can also form:– during ____________________________
– When hot, mineral-rich solutions ______________ ______________ (metallic minerals forming in veins)
How are Minerals Classified?
• Into 2 Groups based on their _____________ ___________________: – Silicates (contain Silicon (Si) ___________ Oxygen (O)–Non-Silicates (contain Si ____ O, but not ______)
• By looking at the ___________ _____________ of a mineral, you can tell if it’s a Silicate or Non-Silicate Mineral
Contain Silicon (Si) ________ Oxygen (O)
Quartz: (contains ONLY Si _______ O)
Feldspars (contains Si, O, + ______________
______________)
Make up _____% of the Earth’s Crust
Feldspars and Quartz alone make up over
______ % of the Earth’s Crust!
Silicate Minerals
Do NOT contain Silicon (Si) _______ Oxygen (O)They CAN contain either
Si ________ O
Make up only _____% of Earth’s Crust
Halite (NaCl) Calcite (CaCO3)
Silver (Ag), Copper (Cu)Galena (PbS)Pyrite (FeS2)
Organized into 6 groups (You don’t have to memorize all the names!) Pg. 113
Non-Silicate Minerals
Are the Following Minerals Silicate, or Non-Silicate Minerals?
• Fluorite (CaF2) ______________
• Hematite (Fe2O3) _______________
• Orthoclase (KAlSi3O8) ____________
• Pyrite (FeS2) ________________
• Quartz (SiO2) _________________
Crystal Structure• All minerals have a
crystalline ___________• Crystal shape is
determined by the arrangement of ____________ in the solid
• Really nice big crystals only form where ________ allows (caves, bottom of bodies of water, etc)
• Usually crystals don’t have room to grow and so they grow as a big _________. This makes it difficult to determine crystal shape.