Jaeguk Jo

13 Questions 10 Answers 0 Followers

Questions related from Jaeguk Jo

Can anyone advise me on how to separate micas from carbonaceous black slates comprising quartz, mica, and coals?

Can anyone advise me on how to separate micas(mostly muscovite) from carbonaceous black slates comprising quartz, mica, and coals?

05 February 2024 8,766 1 View

How can we delineate the distinctions between 'geochemical processes' and 'geochemical mechanisms'?

In the field of geology, How can we delineate the distinctions between 'geochemical processes' and 'geochemical mechanisms'?

11 September 2023 6,340 5 View

Could you explain to me the genetic relationship between a rift basin and a rift valley?

Could you please explain the relationship between a rift basin, a rift valley, and the intrusion of seawater in the geological process?

06 September 2023 5,925 3 View

How to distinguish a bed and a layer in the metasedimentary rocks?

How to distinguish between a bed and a layer through outcrop survey and thin section observation?

21 July 2023 8,063 6 View

Does lead and strontium isotope fractionation occur during the high-temperature smelting process?

If an iron former with a different lead isotope composition is injected, will there be Pb and Sr isotope fractionation during the high-temperature smelting process?

19 July 2023 830 0 View

Anyone who teach me about REE fractionation in the regolith-hosted REY deposits?

1. I measured REY concentrations for weathered whole rocks (anorthosite complex, syenitic rocks, metamorphic complex) and each clay fraction extracted therefrom. The results showed good...

13 April 2021 6,509 1 View

Why is 14N predominant than 15N in amino acids?

Why is 14N predominant than 15N in amino acids? anyone tell me with regard to isotope fractionation.

01 November 2017 561 5 View

About nitrogen isotope fractionation during the ammonium-jarosite formation at pH 1-2?

I wondering about the possibility of nitrogen isotope fractionation between NH4+ and N2(gas) during jarosite formation. Is it possible to occur nitrogen fractionation from NH4+ to N2(gas) during...

30 October 2017 1,740 0 View

Anyone who give me some advise about measuring of the 2:1 clay minerals and jarosite on SEM or TEM analysis?

I did check the ammonium containg two different samples such as 2:1 clay mineral and jarosite in XRD, FTIR, EA/IRMS analysis . and I have a plan to SEM analysis for 2:1 clay mineral (i.c....

05 July 2017 7,213 9 View

Anyone who tell me about mineral identification for XRD analysis (sediments; silicate minerals;maybe )?

rock compositions of sampling area are mainly clay silt, sandstone, conglomerate etc. sample depths : 50-650cm, yellowish brown color. i want to know peak position (2θ, near 9º ?, 12-13º ?,...

19 January 2017 3,647 4 View

About the light nitrogen isotope values of clay fractions around seafloor vent system?

i tried nitrogen isotope analysis for clay fractions sediment hosted around seafloor vent system. those data-set results showed light tendency. TN-isotope values A-site 0 ~ -5‰, B-site -5~-6‰...

06 November 2016 4,255 3 View

How to control the pressure in mineral synthesis expriment by Morey type apparatus ?

how to control the pressure in smectite synthesis expriment by Morey type apparatus ? ( the purpose of this experiment that ammonium cation absorption into interlayer of potassium bearing...

25 July 2016 7,238 2 View

How to determine thickness of smectite group clay minerals ?

how to determine that thickness of smectite group clay minerals ? i want to measure that relate to such as saponite and montmorillinite in hydrothermal condition; around ammonium rich sediments...

22 July 2016 417 3 View