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45
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Started by ecublens
Hello all, I detected about 0.6% arsenic in the chemical analysis of a gold sample. I don't think it is arsenopyrite, realgar or orpiment as the ore is oxidized and the sulfur content is very low. What could be the source of the arsenic here and how...
Hello all, I detected about 0.6% arsenic in the chemical analysis of a gold sample. I don't think it is arsenopyrite, realgar or orpiment as the ore is oxidized and the sulfur content is very low. What could be the source of the arsenic here and how...
5
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80
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Started by Goldensing
Had some drilling completed and the samples have been assessed using XRF although no AU was identified. I'd like to know if the gold could be locked up in sulphides which is common for the mine region. What elements are the best indicators to look ...
Had some drilling completed and the samples have been assessed using XRF although no AU was identified. I'd like to know if the gold could be locked up in sulphides which is common for the mine region. What elements are the best indicators to look ...
Last commented on by RI melatroctolite
Thank you.
Thank you.
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223
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Started by bezelsunl
I work for a jewelry company and want to get a full analysis of the metals we use. Them being stainless steel alloy, 10k, 14, and 18k. Gold. I was recommended to use a fire assay but after asking around I notice companies require at least 30g of samp...
I work for a jewelry company and want to get a full analysis of the metals we use. Them being stainless steel alloy, 10k, 14, and 18k. Gold. I was recommended to use a fire assay but after asking around I notice companies require at least 30g of samp...
Last replied to by DAlchemist
Conventional Fire Assay would not be the way to determine the metal content of your jewelry. The fusion of the sample ideally slags off non-precious metals, although some nickel and copper may report ...
Conventional Fire Assay would not be the way to determine the metal content of your jewelry. The fusion of the sample ideally slags off non-precious metals, although some nickel and copper may report ...
1
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204
VIEWS
Started by koki
why when I do XRF scan after Fire assay I don't get 99.99% still witnessing silver
why when I do XRF scan after Fire assay I don't get 99.99% still witnessing silver
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198
VIEWS
Started by koki
is it possible to collect PGM's with litharge, not flux by thermal analysis, please elaborate
is it possible to collect PGM's with litharge, not flux by thermal analysis, please elaborate
1
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192
VIEWS
Started by koki
Am starting a test work on fire assay, what should be the ration of flux to the sample for both high and low grade samples, may i have a reason as well please. thanking you in advance
Am starting a test work on fire assay, what should be the ration of flux to the sample for both high and low grade samples, may i have a reason as well please. thanking you in advance
Last replied to by SmartDog
see: https://www.911metallurgist.com/blog/fire-assayand: https://www.911metallurgist.com/blog/fire-assay-flux-litharge-composition
see: https://www.911metallurgist.com/blog/fire-assayand: https://www.911metallurgist.com/blog/fire-assay-flux-litharge-composition
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275
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2
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325
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Started by BiancaM
I'm using a handheld XRF device for random field analysis in my magnetite plant. I take a wet magnetite sample from my feed to plant and get a Fe% of 58.72 % but when I let the same sample dry and I measure the Fe% with the same handheld XRF device,...
I'm using a handheld XRF device for random field analysis in my magnetite plant. I take a wet magnetite sample from my feed to plant and get a Fe% of 58.72 % but when I let the same sample dry and I measure the Fe% with the same handheld XRF device,...
Last replied to by SmartDog
Let's take a quick look at this, R1 is reading 1, R2 is reading 2. R1 is made up of S (sample) and W1 (water at reading 1), R2 is made up of S (sample) and W2 (water at reading 2). If W1 > W2 t...
Let's take a quick look at this, R1 is reading 1, R2 is reading 2. R1 is made up of S (sample) and W1 (water at reading 1), R2 is made up of S (sample) and W2 (water at reading 2). If W1 > W2 t...
3
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912
VIEWS
Started by Azblue
Hello, everyone. I am a researcher in a small laboratory for a start up community-owned au&cu mining company. As of now, we are planning for preliminary tests of the au contents of some ores. I would like to ask from your experiences for an effective...
Hello, everyone. I am a researcher in a small laboratory for a start up community-owned au&cu mining company. As of now, we are planning for preliminary tests of the au contents of some ores. I would like to ask from your experiences for an effective...
Last replied to by DAlchemist
Were you able to determine a suitable flux recipe?
Were you able to determine a suitable flux recipe?
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1596
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Started by Marshal Meru
We are currently doing our fire assay fusions with a bismuth flux based recipe. I am curious about a stable bismuth recipe. We are using 60 parts sodium bicarbonate/20 parts bismuth recipe. I am curious if the sodium bicarbonate is too much, and I wo...
We are currently doing our fire assay fusions with a bismuth flux based recipe. I am curious about a stable bismuth recipe. We are using 60 parts sodium bicarbonate/20 parts bismuth recipe. I am curious if the sodium bicarbonate is too much, and I wo...
Last replied to by mamabear8709
We are currently trying to switched from lead flux to Bismuth. We are also trialing how to find the best recipe. What can we do?
We are currently trying to switched from lead flux to Bismuth. We are also trialing how to find the best recipe. What can we do?
2
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721
VIEWS
Started by Han
First of all,for the processing of gold and tellurium ores,how exactly does the pos-roasting(calsine ores contain % 60- 62 Fe ) process work,what is the way to obtain tellurium. Second,which do you prefer for chemical analysis,aquea regea or fi...
First of all,for the processing of gold and tellurium ores,how exactly does the pos-roasting(calsine ores contain % 60- 62 Fe ) process work,what is the way to obtain tellurium. Second,which do you prefer for chemical analysis,aquea regea or fi...
3
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1398
VIEWS
Started by Zandarkoad
Hello all! Was hoping you could help me identify a block of metal. It has the markings:BMCC2 4200PN XN 950160 88.https://drive.google.com/file/d/1Y1OVFW5WhvF5VZrl4EaTNBdT-hBf-cIs/view?usp=sharingI'd like to take a sample in for assaying or chemical a...
Hello all! Was hoping you could help me identify a block of metal. It has the markings:BMCC2 4200PN XN 950160 88.https://drive.google.com/file/d/1Y1OVFW5WhvF5VZrl4EaTNBdT-hBf-cIs/view?usp=sharingI'd like to take a sample in for assaying or chemical a...
1
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580
VIEWS
Started by LIMA
Hi, I’m working on a wavelength dispersive x-fluorescence analysis technique for the determination of chemical elements from unknown samples. We use Omnian from PANalytical for elemental analysis. I want to know how to ensure the validity of the ...
Hi, I’m working on a wavelength dispersive x-fluorescence analysis technique for the determination of chemical elements from unknown samples. We use Omnian from PANalytical for elemental analysis. I want to know how to ensure the validity of the ...
1
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630
VIEWS
Started by MRBLUEEYES2010
Couple questions : What are the proper temps and times for curing bone ash as a bedding material.
Couple questions : What are the proper temps and times for curing bone ash as a bedding material.
Last replied to by David
In the mean time, read https://www.mdpi.com/2071-1050/12/7/2988/pdf and https://www.researchgate.net/publication/305822458_The_Ash_from_Fluidized_Bed_Combustion_as_a_Donor_of_Sulfates_to_the_Portland_...
In the mean time, read https://www.mdpi.com/2071-1050/12/7/2988/pdf and https://www.researchgate.net/publication/305822458_The_Ash_from_Fluidized_Bed_Combustion_as_a_Donor_of_Sulfates_to_the_Portland_...
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758
VIEWS
Started by rlarue
Hi, I am a geologist exploring some old alluvial workings which have a reported average Au grade of under 1g/m3. The gold is very fine at under 500 microns and is disseminated within very coarse grained to pebbly alluvial sandstone. My aim is to ...
Hi, I am a geologist exploring some old alluvial workings which have a reported average Au grade of under 1g/m3. The gold is very fine at under 500 microns and is disseminated within very coarse grained to pebbly alluvial sandstone. My aim is to ...
2
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1057
VIEWS
Started by cstott
Hello, I'm new to this forum so thanks in advance for any help. We regularly send out gold solution for reclaim but I would like to find a better way of knowing what to expect from this solution and obviously AA isn't the best option for this. Everyo...
Hello, I'm new to this forum so thanks in advance for any help. We regularly send out gold solution for reclaim but I would like to find a better way of knowing what to expect from this solution and obviously AA isn't the best option for this. Everyo...
Last replied to by
The gold CIP process is a non-filtering cyanide carbon slurry gold extraction process that uses activated carbon to directly adsorb and recover gold from cyanide pulp. It includes the preparation of l...
The gold CIP process is a non-filtering cyanide carbon slurry gold extraction process that uses activated carbon to directly adsorb and recover gold from cyanide pulp. It includes the preparation of l...
1
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795
VIEWS
Started by Devon2017
i have been mining now for a couple years in barkerville and recover a couple buckets of sulphides every season, my claim neighbor crushed some of the sulphides and got a bit of freegold when panning, he then sent the crushed tailings out for assay, ...
i have been mining now for a couple years in barkerville and recover a couple buckets of sulphides every season, my claim neighbor crushed some of the sulphides and got a bit of freegold when panning, he then sent the crushed tailings out for assay, ...
Last replied to by SmartDog
Maybe, possibly, it depends. Was the sample he sent out representative of your material? Was his sample representative of his material? Did the lab do a good job? Has he sent out other samples ...
Maybe, possibly, it depends. Was the sample he sent out representative of your material? Was his sample representative of his material? Did the lab do a good job? Has he sent out other samples ...
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1389
VIEWS
Started by
Can anyone give me some information on how I can calculate the price per ton on gold concentrate i will attach the analysis report
Can anyone give me some information on how I can calculate the price per ton on gold concentrate i will attach the analysis report
Last replied to by sbccbalaji
Are you a trader of gold concentrates or a refiner?
Are you a trader of gold concentrates or a refiner?
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1677
VIEWS
Started by Nipher
On a gold Mine set up, can we entirely depend or use a 56 element handheld XRF Analyser for analysis of gold in solution, gold in carbon, gold in bullion, gold in solid samples from geology? We are used to the use of the Atomic Absorption Spectromete...
On a gold Mine set up, can we entirely depend or use a 56 element handheld XRF Analyser for analysis of gold in solution, gold in carbon, gold in bullion, gold in solid samples from geology? We are used to the use of the Atomic Absorption Spectromete...
Last replied to by SIMetallurgist
Gold in bullion, gold on carbon yes. In ore it is not as reliable I have found.
Gold in bullion, gold on carbon yes. In ore it is not as reliable I have found.
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1358
VIEWS
Started by Millza79
All, Can anyone please let me know the pros or cons for the following methods on a polished thin section taken from a section of drill core: SEM-MLA vs Optical microscopy Thanks
All, Can anyone please let me know the pros or cons for the following methods on a polished thin section taken from a section of drill core: SEM-MLA vs Optical microscopy Thanks
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1146
VIEWS
Started by Ahmed Zaky
i want guide to how to reach with my lab to be international certified lab in gold fire assay and what is the newest astm method for gold fire assay in geological ores
i want guide to how to reach with my lab to be international certified lab in gold fire assay and what is the newest astm method for gold fire assay in geological ores
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1250
VIEWS
Started by aufinder
I wanted to see if anyone knows this matrix and picture of the crystal specimen next to it ? Tellurides I believe but is crystal from Calaverite and is matrix of the orange red grains pebbles almost pure gold oxide111 of same ?...thanks for input on ...
I wanted to see if anyone knows this matrix and picture of the crystal specimen next to it ? Tellurides I believe but is crystal from Calaverite and is matrix of the orange red grains pebbles almost pure gold oxide111 of same ?...thanks for input on ...
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1953
VIEWS
Started by VINCENT4442003
Which of these two testing method is more accurate, advanced and appropriate? Also, I have a spent catalyst that contains 1% platinum, can the purity increase after pre-treatment and refining?
Which of these two testing method is more accurate, advanced and appropriate? Also, I have a spent catalyst that contains 1% platinum, can the purity increase after pre-treatment and refining?
Last commented on by patel10679
Yes I will provide you, how to concentrate Platinum from catalyst waste.
Yes I will provide you, how to concentrate Platinum from catalyst waste.
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1419
VIEWS
Started by Javad
I'm looking for effective methods of analysing acid grade flourspar. Any help, ideas or putting me in the right direction to find some information about this, would be greatly appreciated.
I'm looking for effective methods of analysing acid grade flourspar. Any help, ideas or putting me in the right direction to find some information about this, would be greatly appreciated.
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1359
VIEWS
Started by mohammed_tawfik
anybody familiar with that specific test, is it conclusive ? does it give accurate results ? anyone have the full procedures with calculation what is the lowest ppm does it work for? we have small scale mine and we don't have atomic adsor...
anybody familiar with that specific test, is it conclusive ? does it give accurate results ? anyone have the full procedures with calculation what is the lowest ppm does it work for? we have small scale mine and we don't have atomic adsor...
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1633
VIEWS
Started by Imelda
Hello, I am Imelda from Indonesia In my company, i worked as a melting staff. I used fire assay. They gave me example 27,5% gold sample for analyzing. They want me to check if the concentration is right or not. The flow chart : take .... mg of samp...
Hello, I am Imelda from Indonesia In my company, i worked as a melting staff. I used fire assay. They gave me example 27,5% gold sample for analyzing. They want me to check if the concentration is right or not. The flow chart : take .... mg of samp...
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1474
VIEWS
Started by CSwart
I am looking for market prices in (USD per metric tonne) for silica sands, marble, dolomite, natural gas, quartzite, kaolin, attapulgite, bentonite, and the list goes on. I have searched on LEM, but it only specifies metals. Is there a specific we...
I am looking for market prices in (USD per metric tonne) for silica sands, marble, dolomite, natural gas, quartzite, kaolin, attapulgite, bentonite, and the list goes on. I have searched on LEM, but it only specifies metals. Is there a specific we...
2
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1376
VIEWS
Started by sircrouch
Good day im currently doing my practicals in metallurgy at Germiston in a Sampling plant, im struggling to start a project as part of my curriculum i have no mentor whatsoever any ideas on how i can go about just enough for me to calculate compare an...
Good day im currently doing my practicals in metallurgy at Germiston in a Sampling plant, im struggling to start a project as part of my curriculum i have no mentor whatsoever any ideas on how i can go about just enough for me to calculate compare an...
Last replied to by vpmaasdorp
Like Todd H said, you need to be more specific. Start off by deciding what your project is about. Then read up on similiar projects to understand what you expect to achieve with this project. Once...
Like Todd H said, you need to be more specific. Start off by deciding what your project is about. Then read up on similiar projects to understand what you expect to achieve with this project. Once...
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1497
VIEWS
Started by n3133
Hi guys, I'm interested in learning more about XRF analysis in the potash industry, it would be great if some of the questions can be answered XD Is XRF analyzer the only type of analyzer used to measure potassium concentration in ...
Hi guys, I'm interested in learning more about XRF analysis in the potash industry, it would be great if some of the questions can be answered XD Is XRF analyzer the only type of analyzer used to measure potassium concentration in ...
In general you can get an idea, say you have 50% more sulfur than arsenic, then you can propose that the base mineral was orpiment. If you have equal amounts of sulfur and arsenic then you cam propo...