1 What is caused by the presence of trace elements in a mineral?A) luster B) streak C) color D) harness 2 What happens to calcium carbonate when it is exposed to hydrochloric acid?A) It turns color. B) It fizzes. C) It breaks. D) It looses luster. 3 A mineral is __________ if it can be mined for profit.A) an igneous rock B) an ore C) a crystal D) a rock 4 __________ is the measure of how easily a mineral can be scratched.A) Specific gravity B) Streak C) Hardness D) Luster 5 What is the hardness of quartz?A) 2 B) 7 C) 9 D) 4 6 What describes the way a mineral feels?A) streak B) texture C) luster D) hardness 7 What makes a mineral a gem?A) its deep color B) its rarity and beauty C) its association with native elements D) its pearly luster 8 What is the numerical value for the hardest mineral on the Mohs hardness scale?A) 100 B) 20 C) 11 D) 10 9 A mineral's __________ is the color when it is powdered.A) hardness B) streak C) density D) luster 10 If a mineral breaks along distinct planes, it is said to have __________.A) fracture B) a high specific gravity C) cleavage D) a dull luster 11 According to the table, which mineral is capable of scratching garnet?Mineral
Color
Hardness
Gold Metallic gold 2.5- 3 Apatite Blue, green 5 Pyrite Metallic pale brass, gold 6-6.5 Garnet Red, deep red, brown 7.5- 8 Corundumm Red, deep red 9
A) corundum B) gold C) pyrite D) apatite 12 Which of the minerals listed in the table has the greatest density?Mineral
Specific Gravity
Chemical Formula
Breakage Pattern
Gold 19.3 Au Hackly Apatite 5 Ca5 (PO4 )3 (F,OH,CL) Uneven fracture Pyrite 5.2 FeS2 Uneven fracture Garnet 3.5- 4.3 (Mg,Fe,Ca)3 (Al2 Si3 O12 ) Conchodial fracture Beryl 2.75 Be3 Al2 Si6 O8 Uneven fracture Corundumm 4 Al2 O3 Fracture
A) beryl B) corundum C) pyrite D) garnet 13 __________ is the way a mineral reflects light.A) Color B) Cleavage C) Streak D) Luster