Abu Saeed Baidya

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Questions related from Abu Saeed Baidya

How to precipitate FeOOH from a FeCl2 solution in mildly acidic (pH 5.5-6.5) condition?

Dear researchers, Do you have an idea how to precipitate FeOOH from a 2mM FeCl2.4H2O solution at pH 5.5 to 7? I know that adding NaOH in an FeCl2 solution would help precipitate FeOOH. However,...

25 January 2023 1,236 0 View

Optimal values of k during imputation of data by the K-nearest neighbor method in R?

Dear Researchers, We are trying to impute values in a large data set (n=1950) by k-nearest method. There are 60 nos. of missing data which are needed to be imputed. The data will be used for PCA...

04 June 2021 5,046 3 View

Redox conditions for graphite precipitation in hydrothermal systems?

Dear Researchers, We have found a hydrothermal association of biotite-sulfide (chalcopyrite-pyrrhotite-Co-rich sulfides)-uraninite-graphite-allanite with minor tourmaline and xenotime. We are...

08 May 2021 704 5 View

How to know if mineral-fluid equilibrium was achieved in hydrothermally altered and mineralized rock?

We are working on a mineralized hydrothermal system (Iron-oxide-copper gold i.e. IOCG) and want to perform some thermodynamic calculations (e.g., Biotite thermometry, halogen fugacity ratios of...

16 January 2021 9,136 6 View

How to calculate halogen fugacity ratio of fluids from biotite composition?

I am currently working on biotites from the Khetri IOCG belt, western India and want to calculate log(fH2O/fHCl) of fluid from biotite halogen chemistry. I find most of the articles have used the...

18 August 2020 3,863 2 View