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Minerals/Transuranics/Quiz

< Minerals | Transuranics

Transuranic minerals is a lecture from the school of geology. It is about solid, crystalline substances containing the transuranic elements of the periodic table that occur in and compose astronomical objects. It focuses on materials that may occur on the surface of or associated with some astronomical objects.

File:Muromontite.png
This is a sample of the naturally occurring mineral muromontite. Credit: eBay seller rubbleshop.

You are free to take this quiz based on transuranic minerals at any time.

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Quiz

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1 Complete the text:

Based on the observation of the long-lived isotopes of

, 261Rg and 265Rg (Z = 111, t1/2 ≥ 108 y) in natural

, an experiment was performed to enrich Rg in 99.999% Au.

2 Yes or No, Radium is an actinide element.

Yes
No

3 Carnotite is a potassium uranium

radioactive mineral.

4 Yes or No, Lead is an actinide element.

Yes
No

5 Autunite occurs as an oxidizing product of uranium minerals in granite pegmatites and hydrothermal

.

6 True or False, Actinium is an actinide element.

TRUE
FALSE

7 Complete the text:

Elements usually emit a

during nuclear

or

.

8 True or False, Actinide minerals, or actinides, are those with unusually high concentrations, atomic per cents, or weight per cents, of the actinide elements.

TRUE
FALSE

9 Carnotite is a mineral that may be associated with which phenomena?

varying water content
small amounts of calcium, barium, magnesium, iron, and sodium
a bright to greenish yellow mineral
demonstrating that Venus was once a comet
amounts as low as one percent will color sandstone a bright yellow.
an important uranium ore
usually found in sedimentary rocks in arid climates

10 Yes or No, Thorium is an actinide element.

Yes
No

11 Complete the text:

Muromontite is a mixture of uranium and

. Alpha particles from the decay of

are captured by the beryllium atoms, which in turn release neutrons. In the case of this sample, the neutrons are in turn re-captured by the

, which then undergoes further

and is transformed into

.

12 Yes or No, Thorium is a transuranic element.

Yes
No

13 A terrestrial planet is composed primarily of?

14 Yes or No, Protactinium is an actinide element.

Yes
No

15 The primary source of the world's thorium is the rare-earth, and thorium, phosphate mineral

.

16 Yes or No, Uranium is an actinide element.

Yes
No

17 Complete the text:

The extremely rare element technetium can be found in

in very small quantities (about 0.2 ng/kg), produced by the

fission of uranium-238.

18 True or False, Neptunium is a transuranic element.

TRUE
FALSE

19 Which geochemical phenomena are associated with thorianite?

thorium oxide
lightning
common in the alluvial gem-gravels of Sri Lanka
the mineral is slightly less radioactive than pitchblende
liquid methane oceans
water worn, small, heavy, black, cubic crystals

20 Yes or No, Muromontite contains the highest known naturally occurring concentration of plutonium.

Yes
No

21 True or False, Plutonium is an actinide element.

TRUE
FALSE

22 Phenomena associated with torbernites?

have a gaseous surface
radioactive
hydrated green copper uranyl phosphate mineral
isostructural with the related uranium mineral, autunite
the number of water hydration molecules can vary between 12 and 8
gives rise to a variety of metatorbernite when torbernite spontaneously dehydrates

23 True or False, Americium is a transuranic and an actinide element.

TRUE
FALSE

24 The rarest naturally occurring element on Earth is named

25 True or False, Curium is a transuranic element.

TRUE
FALSE

26 Uranophane is a rare calcium uranium

hydrate mineral.

27 True or False, Berkelium is an actinide element.

TRUE
FALSE

28 Red ochre is a natural pigment composed of what likely source of red?

29 True or False, Californium is a transuranic element.

TRUE
FALSE

30 Match up the crystal with the mineral

uraninite - A
monazite - B
pitchblende - C
thorianite - D
 

.
 

.
 

.
File:Uraninite crystal cluster.jpg

.

31 Yes or No, Einsteinium is an actinide element.

Yes
No

32 A gamma-ray spectrum for autunite is likely to show peaks for Ra-226,

and Bi-214.

33 True or False, Fermium is an actinide element.

TRUE
FALSE

34 True or False, Fermium isotopes have been found in precambrian carbonate rocks from Sao Paulo State.

TRUE
FALSE

35 Yes or No, Mendelevium is an actinide element.

Yes
No

36 Yes or No, Nobelium is an actinide element.

Yes
No

37 Yes or No, Lawrencium is an actinide element.

Yes
No

38 Yes or No, The symbol for the element livermorium is Lm.

Yes
No


Hypotheses

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Main resource: Hypotheses
  1. Transuranics may be found in rocks and minerals where heavy elements including actinides occur.

See also

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edit

{{Radiation astronomy resources}}

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