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?

a. three directions at ~90°
b. three directions not at ~90°
c. two directions at ~90°
d. two directions not at ~90°

Answers

Answer 1

Answer:

a. three directions at ~90°

Explanation:

Galena is known for its presence in all types of rocks (igneous, metamorphic and sedimentary rocks). It is predominantly ore of lead which has a chemical configuration of PbS and lead sulfide. Also, newly severed chunks of galena display excellent cleavage in three directions at ninety degrees.

Hence, in this case, the correct answer is "galena’s cleavage is best described as three directions at ~90°"


Related Questions

Write a report of no less than 125 words comparing the report of the two spies returning from Jericho (Joshua 2:24) with the report of the other spies mentioned in Numbers 13:31-33. Explain who exercised faith and how we can apply this to our lives today.

Answers

Answer:

The spies returning from the City of Jericho acknowledged the problems, but had faith that God would prevail over the problems. The other spies were lacked faith in God and did not think He would help them.

When the spies returned from reconnoitering the land of Jericho, and brought back a number of items including honey and giant grapes so large they had to be carried by two men and hung on a pole, they concluded that the land does actually flow with milk and honey.

"We went to the land where you sent us. It truly flows with milk and honey, and this is its fruit." (Numbers 13:27)

The spies also deduced that the people who dwelt in the territory are very large and very strong. The cities enormous and heavily barricaded. They saw that the descendants of Anak lived there in the city.  

"Nevertheless the people who dwell in the land are strong; the cities are fortified and very large; moreover we saw the descendants of Anak there. The Amalekites dwell in the land of the South; the Hittites, the Jebusites, and the Amorites dwell in the mountains; and the Canaanites dwell by the sea and along the banks of the Jordan."  

(Numbers 28-29)

The people began grumbling and complaining. Caleb, who was one of two of the faithful spies, said: "Let us go up at once and take possession, for we are well able to overcome it."  

The other ten replied by stating:  "We are not able to go up against the people, for they are stronger than we."

Numbers 13: 32-33 goes on to say: “And they gave the children of Israel a bad report of the land which they had spied out, saying, "The land through which we have gone as spies is a land that devours its inhabitants, and all the people whom we saw in it are men of great stature.”  

What the spies saw were giants (whom were descendants of Anak); they felt like mere grasshoppers in comparison to them.    

The following day, the people had had enough and began calling for Joshua and Caleb to be replaced by a new leader, one that would take them back to Egypt.

Both Joshua and Caleb ripped their clothes in anguish and told the people:  

"The land we passed through to spy out is an exceedingly good land. If the Lord delights in us, then He will bring us into this land and give it to us, 'a land which flows with milk and honey.' Only do not rebel against the Lord, nor fear the people of the land, for they are our bread; their protection has departed from them, and the Lord is with us. Do not fear them." And all the congregation said to stone them with stones. Now the glory of the Lord appeared in the tabernacle of meeting before all the children of Israel.

(Numbers 14:7-10).

Here is where the report of the spies ends since as God has now interceded.

Explanation: Joshua and Caleb both exercised faith by trusting in the Lord and not falling weak to the people who said terrible things about them and wanted to replace them with someone who would do what they wanted.  

We can apply this to our lives today by continuing to have faith in God. To trust His ways and obey them.  

According to the report of the spies according to the book of Joshua 2;24, we can see that Joshua and Caleb went to the city of Jericho to spy and assess the strength of the warriors and city there and find out how they can take the city.

However, in Numbers 13: 31-33, we can see  that out of the twelve spies which were sent, only Joshua and Caleb said positive things, but the other ten brought back negative reports by saying that they could never take the city, that the men were like giants, while they were like ants.

The two people who expressed faith are:

Joshua Caleb

We should always apply such faith in our lives and believe that no matter how tough the difficulty is, we can overcome it.

Read more here:

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Large igneous provinces (LIPs)
A. erupt only high-viscosity magma and are therefore localized but very thick.
B. occur only along continental margins.
C. represent special events in the Earth's history that may have been caused by plume activity.
D. are places where huge amounts of felsic magma have been erupted or intruded.

Answers

I’m sure it is c hope that helped

Describe the problems caused by water scarcity in the Middle East. What are some of the strategies the region has taken to deal with this issue? Plz hurry I don't have much time

Answers

Answer:

The problems that the Middle East faces because of water scarcity are that the population is concentrated in very small areas, agriculture is on a low level, and the population growth is limited. Some of the strategies used for this problem are strictly controlled water supply, desalinization, and artificial rainfall.

Explanation:

e The Middle East is one of the poorest regions in the world when it comes to water supplies. This has caused numerous problems and even nowadays with the advancements of technology they are hard to solve. Because there are huge areas that don't have any water at all, the populations are usually very concetrated near the very few water supplies. The population growth is limited because there simply isn't enough water for large population growth, and agriculture is only possible in small areas, while it lacks in the majority of the region.

In order to solve some of these problems, the leaders have been coming up with some solutions. Israel has been using technology to produce rainfall, which has had excellent results. The water supply is heavily controlled and no one is allowed to overuse it. The biggest problem, water for drinking, has been solved by using the process of desalinization of the saline water.

Answer:

Many areas of the Middle East struggle with water scarcity. Some places may have trouble ensuring that everyone has enough water for drinking and home use. Food production is also an issue - there is not enough water to grow enough food for everyone. A growing population in the region is making the problems worse. One strategy that countries have used is constructing desalination plants. These plants turn seawater into freshwater.

Explanation:

Which of the following statements best describes why most cultures have changed over time?
A. All cultures have been colonized by an outside power at one time or another.
B. All immigrants abandon their native cultures and assimilate into new ones.
C. New elements and ideas are spread and adopted into existing cultures.
D. Decreased trade and communication have increased connections between people.

Answers

Answer:

I think option C

Explanation:

New elements and ideas have entered our culture

Answer: C

Explanation: just took test

PLEASE HELP THIS IS DUE ON MINS

Answers

Answer:

D and E and maybe C

Explanation:

How does arithmetic density affect people who live in an area?

Answers

Urban areas with a high arithmetic density have an increased need for food, infrastructure, and health/human services

Answer:

In general, increases in population density equate to problems for a country. Urban areas with a high arithmetic density have an increased need for food, infrastructure, and health/human services.

Explanation:

a book

4.
What is meant by conflict resolution?​

Answers

Answer:

Conflict resolution is conceptualized as the methods and processes involved in facilitating the peaceful ending of conflict and retribution.

Answer:

Conflict resolution is a way for two or more parties to find a peaceful solution to a disagreement among them. The disagreement may be personal, financial, political, or emotional. When a dispute arises, often the best course of action is negotiation to resolve the disagreement.

Match the term in column 1 to the definition in column 2.
Demography
?
Study of human
population
Census
?
Number of people per
square mile
?
Carrying capacity
Population an area can
support
Population
density
?
Count of an area's
population

Answers

Explanation:

Study of human population - Demography

Number of people per square mile - Population density

Population an area can support - Carrying capacity

Count of an area's population - Census

The terms given are all related to the measures of the population, the number of people living in a particular place. Demography is the study of the human population is particular place. Some tools are used to measure and study population dynamics. This helps for better planning and decision making. Population density is a quantitative metrics which measures the number of people per square mile. The carrying capacity of place describes the population a particular area can support. The head count of a organisms or people in a particular place is called a census.

Answer:

Study of human population - Demography

Number of people per square mile - Population density

Population an area can support - Carrying capacity

Count of an area's population - Census

Definition of faction(politics)

Answers

a small organized dissenting group within a larger one, especially in politics.

Answer:

A political faction is a group of individuals within a larger entity, such as a political party, a trade union or other group, or simply a political climate, united by a particular common political purpose that differs in some respect to the rest of the entity.

Which best describes the University of Georgia? A. It was founded to educate children of all races. B. It was the first state-funded university in the United States. C. It was the first school in the United States. D. It was a for-profit, private university.


PLEASE HELP

Answers

Answer:

the answer is: It was the first state-funded university in the United States.

Explanation:

The University of Georgia, which is based in Athens, Georgia, was granted a state charter in 1785, making it the country's first public institution of higher learning, hence option B is correct.

What is the University of Georgia?

The university of Georgia's College of Education and Law School both offer graduate degrees.  The University of Georgia is involved in agricultural research and program promotion as a land and sea grant institution.

Lyman Hall, a Yale university graduate and one of the Declaration of Independence's three physicians, convinced the Georgia legislature to award 40,000 acres (160 km2) in 1784 while serving as governor of Georgia as an endowment for the establishment of a "college or seminary of learning."

Therefore, The university was the first publicly sponsored institution of higher learning in the United States, hence option B is correct.

Learn more about the university, here:

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geography question!! please help

Answers

Mexico’s brain drain will have a huge impact on the country. Because so many people are fleeing the country there won’t be as much money being brought in to the economy because there aren’t as many people buying things and working which adds to the economy.

what is an impact of river rejuvenation on farming activities​?

Answers

Explanation:

In geomorphology a river is said to be rejuvenated when it is eroding the landscape in response to a lowering of its base level. The process is often a result of a sudden fall in sea level or the rise of land. The disturbance enables a rise in the river's potential energy, increasing its riverbed erosion rate. The erosion occurs as a means for the river to adjust to its new base level

India is facing its worst water crisis in four decades. At least 54 percent of the sub-continent has turned into a water-stressed dust bowl with many rivers rapidly drying up. Experts opine that by 2025, the country will be facing an acute water crisis if no preventive measures are taken today.

To mitigate the water crisis, Gurudev Sri Sri Ravi Shankar has inspired The Art of Living community to revive lost rivers in various parts of India and other water bodies such as ponds, wells, canals and temple tanks.

The River Rejuvenation Project, which started in 2013 with the aim to provide a long-term and lasting solution, has reviving 43 rivers in four states (Maharashtra, Karnataka, Tamil Nadu and Kerala), benefitting 5,084 villages and 7 million + people benefited.

With meticulous planning and consistent efforts, results have come in: several rivers and other smaller bodies in these states have started flowing once again.

An impact of river rejuvenation is that it leads to increased produce due to the fact that it supplies farmlands with water.

What is river rejuvenation?

This is a situation where there is an eroding of water due to the fact that the water in the rivers have become higher than their base level.

When this is the case they help to provide farmlands with water which are useful to plants.

Read more on river rejuvenation here:https://brainly.com/question/26756843

In what ways did racial segregation exist in the North in the eawrly decasdes of the Great Migration?

Answers

Answer:

Explanation:

The Great Migration was the relocation of more than 6 million African Americans from the rural South to the cities of the North, Midwest and West from about 1916 to 1970. Driven from their homes by unsatisfactory economic opportunities and harsh segregationist laws, many blacks headed north, where they took advantage of the need for industrial workers that arose during the First World War. During the Great Migration, African Americans began to build a new place for themselves in public life, actively confronting racial prejudice as well as economic, political and social challenges to create a black urban culture that would exert enormous influence in the decades to come.

which part of the cryoshpere comes directly from the atmosphere ?​

Answers

Answer:

The answer is snow

Why is New Jersey called the "Garden State"?
lots of dairy
lots of ranching
lots of farming
lots of mining

Answers

my best guess would be lots of farming, since farming and gardening have a lot to do with each other

define food insecurity​

Answers

Food insecurity is a measure of the availability of food and individuals ability to access it.

16. Which of the following can be explained at point B? А Lithosphere B Mantle Outer core Inner core O plates move apart and volcanoes form O plates move past each other sideways O plates are not moving O plates move toward each other and volcanoes form​

Answers

I think the answer to this question is b

What is the scale factor from the orginal figure to the copy

Answers

Answer:

Scaled copy of original figure is created by multiplying the every sides of the original figure by the same number.

Ex: one side of original figure length is 2m then scaled copy will have length of one side as 4m (2×2)

So the scale factor is 2 which is twice as long as the corresponding side of original figure

What type of information does a physical map always show?

A. natural features
B. national boundaries
C. roads
D. where people live

Answers

Answer:

A

Explanation:

tell me if its wrong

Answer:

I think it's A

Explanation:

i hope this helps

What role do rivers play in geology? What role do they play vis-a-vis humanity?

Answers

Answer:

In geology, the rivers' main role is erosion and deposition, while for humanity, they have been crucial for the survival and development.

Explanation:

The rivers are water bodies (almost always of freshwater) and they have an influence on many things, be it of living or non-living nature. Physically, the big influence of the rivers can be seen in geology. The socio-economic and existential influence can easily be seen with humans.

In geology, the rivers have a big influence because of their big erosive power and their carrying capacity. Basically, the rivers destroy the rock strata, but also carry the material and pile it up at another place. At humanity, the rivers have been crucial for the survival of the species, but they have also enabled humans to produce their own food, develop civilization, and prosper.

What are 5 best characteristics of mexico

Answers

5 best characteristics of mexico are ÷

1 . Mountains cover much of Mexico.

2. There are dense forests in south and east

3. Mexico is the oldest city in North America.

4. World smallest volcano lies in Mexico.

5.Mexico has the ninth-largest economy in the world.

What statement best describes the earth ocean

Answers

It is varied and includes features such as submarine canyons, atolls, and mid-ocean ridges.

Answer:

oceans cover most of the plant surface and contain nearly all earth water

Explanation:

What are some global effects on society?

Answers

climate change

Explanation:

because you know our nature is little bit destroy

Pollution in cramped neighborhoods and a few people have to go eat at a party and the food here is so bad and I hate that they have a good choice for a drink skate and a good girl to drink a coke.

Whyis dangerous to live in El Salvador

Answers

Explanation:

El Salvador has problems with crime and violence. The country ranks as the highest in the world based on the number of homicides per country.

Although crime is limited to certain areas in the country, it is generally not so safe to move around the country.

Several murders occur per year in this country with foreigners getting the frame of this menace. The severe drug culture, poverty and lack of opportunities makes this problem more aggravated.

what is the value of g?
g = 75
g = 80
g = 100
g = 105

Answers

Answer:

75≤g≤105

Explanation:

the answer must be 75≤g≤105 i think so

Answer:

D) g = 105

Explanation:

just did it on edge 2020

How is the Sikh holy book different from
the Quran and Bible?

Answers

I’m Muslim but I’m still a teenager so I don’t know much but I hope these articles help you

Answer:

Guru Granth Sahib (the Sikh holy book), contains writing from many poets from other religions (Muslim, Hindu), as well as Sikhs.

Which statement places events during the Space Race in the corect order from the earliest to the most recent?
A. NASA was established, US satelite Explorer launched, first man walked on the moon first man orbited the Earth
B. first man walked on the moon, first man orbited the Earth, NASA was established, US satellite Explorer launched
C. US satellite Explorer launched, NASA was established, first man orbited the Earth first man walked on the moon
D. first man orbited the Earth, first man walked on the moon, US satellite Explorer launched, NASA was established​

Answers

Answer:

C

Explanation:

US satellite Explorer launched, NASA was established, first man orbited the Earth first man walked on the moon

Answer:

c

Explanation: first man walks on the moon

Underwater mountain ranges are formed when two plates move apart and liquid rock from the mantle rises and builds up to fill the space are called? ​

Answers

The answer would be Continental Ridge! Hope that helps!

What is found in the magma chamber

Answers

Answer: A magma chamber is a large pool of liquid rock beneath the surface of the Earth.

Explanation: In a magma chamber, you can find liquid rock, molten rock, and magma.

what is the radius of the earth

Answers

The radius of the earth is 3,958.8 mi
i believe it’s 3,958.8 mi
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