Which mineral can be easily scratched by a fingernail, has cleavage, metallic luster and a black streak?

Health

2 answers:

Sedaia [141]3 years ago

7 0

Answer:

galena

If you hit a specimen of galena with a hammer it will shatter into small perfect cubic crystals. It has a metallic luster and a black to dark gray color and streak. Galena has a hardness of about 2.5 on Mohs hardness scale which is about as hard as your finger nail.

Explanation:

I hope it's help you

natita [175]3 years ago

4 0

Answer:

Galena

Explanation:

Galena usually occurs in cubic crystals. If you hit a specimen of galena with a hammer it will shatter into small perfect cubic crystals. It has a metallic luster and a black to dark gray color and streak. Galena has a hardness of about 2.5 on the Mohs hardness scale which is about as hard as your fingernail.

You might be interested in

A peer is someone that is considered your superior and knows more than you.

LenaWriter [7]

That’s not always true a peer could be a teacher or a life coach someone that helps you when you need it

3 0

3 years ago

Read 2 more answers

A health diet should

Brrunno [24]

C is the orientation answer hope it helps you

8 0

3 years ago

If your goal is to find a mentor who can help encourage you, which category would it fall into

Wittaler [7]

Answer:

Strong, honest, helpful, and defendant.

6 0

3 years ago

You are monitoring Alzheimer’s disease in your state. You come across a state report from last year that shows a proportionate m

sweet-ann [11.9K]

Answer:

398 deaths were caused by Alzheimer.

Explanation:

Proportionate mortality rate (PMR) gives the proportion of deaths in a given population over a period of time, this can be linked to various causes.

Mathematically PMR is reoresented below;

PMR = $\frac{D_{s} }{D_{t} }$ X 100