Dilip Majumdar

13 Questions 39 Answers 0 Followers

Questions related from Dilip Majumdar

Which lab provides stable isotopes and zircon chemistry?

Looking for the cooperation from geoscientists having laboratory access/facilities to analyze Oxygen and Sulphur isotopes in delta notation and zircon chemistry by LA-ICP-MS. The above...

14 May 2021 8,664 3 View

Can gold and PGE associated together with magnetite in UM-M bodies?

In a newly gabbro-anorthosite body is found saturated with stratified magnetite bodies. Preliminary observation indicates presence of PGE and gold.

24 May 2019 7,713 8 View

Where do I get Sm-Nd analytical facility in India?

For long, I am looking for the Sm-Nd analytical facility. My terrain has mafic, felsic and metasediments. So far there is no age data available for the mafic rocks. The rocks are having...

31 March 2019 8,682 9 View

Identifying PGE by SEM and XRD. Will it be possible to get more or less same results by the Fire Assay method?

Getting result of SEM and XRD with full positivity in PGE concentration in a gabbro-anorthositic layered complex but not getting full support when analyzed by fire assay method.

15 February 2019 622 3 View

Why U enrichment in Pan-African Granites?

It is usually seen that Pan-African granites are rich in LREE and U. Is it because Pan-African granites are anorogenic and highly differentiated, derived due to partial melting of metasomatised...

10 March 2017 7,885 4 View

Oscillatory zoning in zircons is of magmatic origin?

I am working on zircons of granitoids where the isolated zircon grains largely show oscillatory zoning revealed in CL images. My immediate attention to experts is that if those zircons originated...

02 February 2017 3,726 13 View

Is it possible to make inference on the mineral name by observing four photomicrographs of rare earth metal bearing accessory phases?

Optical properties of four photomicrographs are added in attached file. From interference colour and grain morphology let me have the name of the minerals found as accessory phase in...

22 January 2017 9,873 8 View

What is the mineable percentage of rare Earth Element concentration in normal low calcium granite?

I have been studying non-porphyritic granites some belong to the Pan-African magmatic regime. The total LREE content recorded is >500 ppm and HREE is about 80 ppm. The granitoids are hard but...

18 January 2017 4,047 6 View

Is it a uranium deposit if uranium content in subalkaline granites reads up to 45 ppm?

REE rich subalkaline anatectic granites, mostly metaluminous having 10-45 ppm uranium content; uranium being incorporated in accessory mineral phases like zircon, allanite, monazite, apatite.

07 December 2016 3,401 7 View

What is the significance of negative Pr anomaly in chondrite normalized REE diagram?

Recently, I analyzed REE of certain granites. The chondrite normalized REE plot shoed -ve Pr anomaly. I am puzzled to see the profile!

15 September 2016 1,931 4 View

Is it possible to do statistical data analysis by Mahalonobis method?

My data comprises of bulk geochemical i.e.,major, trace and REE parameters of granitoids. Mineralogical and norm calculation do not show much variation of data. However, I can correlate data...

14 June 2016 8,584 2 View

Can any one help me to generate oxygen isotope and fluid inclusion data on porphyry granitoids?

Dear Researcher, I am critical about a porphyry Cu-S ore occurrence while working on a porphyry granitoid in a cratonic shield of NE India . As my study shows positive indications in many...

09 May 2016 10,045 3 View

Is it possible to model a porphyry type mineralization based on the undermentioned character?

The data which I obtained: a mantle ratio of 87Sr/86Sr; and 34S/32S of sulphides calc-alkaline; granodiorite, quartz monzonite composition of host porphyry granitoids; I type chemistry; within...

21 April 2015 8,957 8 View