Geography, 30.03.2021 21:10, villarrealc1987
Galena - Coeur d'Alene Mining District/Silver Valley, ID. The Coeur d'Alene Mining District in Silver Valley, ID is known for its large lead deposits of the mineral galena (PbS). Galena is one of the few common minerals with a metallic luster that has a distinctive cleavage (cleavage is how a mineral breaks or parts along preexisting planes of weakness). Cleavage is described by the number of unique directions of cleavage planes and the angle between those planes. Which of the following best describes galena's cleavage (see animation in placemark)?
a. three directions at ~90
b. three directions not at ~90°
c. two directions at ~90°
d. two directions not at ~90°
Answers: 3
Geography, 23.06.2019 11:00, anthonygarib24
Short answer/constructed response: respond to the question in 3-5 complete sentences. give details or examples to support your answer. attempt to answer all parts of the question in paragraph form! using the source 1 map, pick two of the 1800's territorial acquisitions you believe were the most important in the development of the united states. provide at least two reasons per territory to explain why you think they were the most important.
Answers: 2
Geography, 24.06.2019 10:00, sophiav9627
According to the article about the zhou dynasty, this dynasty was broken into different eras because its capital changed from place to place. how many different eras were there in the zhou dynasty? a. two b. six c. ten d. fourteen
Answers: 1
Geography, 24.06.2019 11:20, mtropical6753
What man-made lake was created by the building of the hoover dam?
Answers: 1
Galena - Coeur d'Alene Mining District/Silver Valley, ID. The Coeur d'Alene Mining District in Silve...
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