Geothermometry, Geobarometry & Isotope Studies

Question 1

Sequence of deposition of minerals

Answer 1

Paragenesis

Question 2

Collection pr gathering of minerals or rock

Answer 2

Assemblage

Question 3

Having a connection or resemblance with other mineral in certain temperature and pressure regime

Answer 3

Associated

Question 4

The spatial distribution of paragenesis

Answer 4

Zoning

Question 5

The spatial distribution of paragenesis

Answer 5

Zoning

Question 6

Born beside

Answer 6

Paragenesis

Question 7

Measurement of lavas, fumaroles, hot springs

Answer 7

Direct Measurement

Question 8

Indicate the maximum crystallization temperature

Answer 8

Melting Point

Question 9

Some minerals lose their volatile content at certain temperature

Answer 9

Dissociation

Question 10

Transformation of some minerals crystal system to another is temperature dependent

Answer 10

Inversion Point

Question 11

Minerals that form solid solutions unmix at specidic temperatures to yield distinguishable intergrowths

Answer 11

Exsolution

Question 12

Melting Point of Albite

Answer 12

1104C

Question 13

Melting Point of Stibnite

Answer 13

546C

Question 14

Melting Point of Bismuth

Answer 14

271C

Question 15

Exsolution of

Chalcopyrite - Bornite

Answer 15

475C

Question 16

Exsolution of

Cubanite - Chalcopyrite

Answer 16

450C

Question 17

Exsolution of

Bornite - Chalcopyrite

Answer 17

175-225C

Question 18

similar to inversion and exosoution but applies more specifically to native metals

Answer 18

Recystallization

Question 19

Recrystallization temp of

Cu
Ag

Answer 19

450C

200C

Question 20

Quartz lose color at

Answer 20

240-600C

Question 21

Fluorite lose color at

Answer 21

175C

Question 22

indicate the approximate temp of formation of the crystals by the amount of contraction of the liquid, assuming that the liquid originally filled the cavity

Answer 22

Fluid Inclusion

Question 23

heating the sample until heterogeneous fluid inclusion homogenizes

Answer 23

Filling Temperature (Minimum Temperature of Formation)

Question 24

by the freezing point depression method

Answer 24

Total NaCL-equivalent salinity of the fluid

Question 25

The minimum melting point

Answer 25

Eutectic Point

Question 26

inclusion is opened up and direct tests are made on the liquid by optical properties

Answer 26

Composition of the ore-blearing fluid

Question 27

inclusions formed in growing crystals, no leakage

Answer 27

Primary

Question 28

with fracture & sealed again, records conditions of later hydrothermal stage

Answer 28

Secondary

Question 29

looks like secondary, but the host crystal was fractured as the crystal was growing

Answer 29

Pseudosecondary

Question 30

commonly based on mineral assemblage and composition information

Answer 30

Geobarometry

Question 31

estimation of pressure condition at which a geologic material formed

Answer 31

Geobarometry

Question 32

an element that has a nuclei that does not change spontaneously

Answer 32

Stable isotope

Question 33

decays into daughter isotopes at known rates

Answer 33

Radioisotopes

Question 34

amount of time needed for one half of radioactive parent to decay

Answer 34

Half-life

Question 35

is any Pb from a rock or mineral that contains a large amount of Pb and a small amount of the radioactive progenitors of Pb

Answer 35

Common Lead