Geometallurgical approach and quantitative …...Geometallurgical approach and quantitative...

Geometallurgical approach and quantitative mineralogy of the

copper/gold deposit of Chelopech

1. Location

Chelopech

•Western Bulgaria at 75km from Sofia

•Southern part of BTS belt

•Central position in Panaguyrishte district

4. Classification of minerals

2. Samples

•55 images/ polished section •3 wavelengths/image

•Creation of polished sections (-38µm, 38-75µm and +75µm) from flotation plant samples

3. Acquisition

5. Image correction

•Excellent classification

but

« Mixel » and plucking problems

6. Quantitative results •Allow to know proportions of each mineral in each sample

Image classified (before correction)

Rectified image

EVRARD Maxime and PIRARD Eric

GeMMe- Minerals Engineering, Materials and Environment

•Match with optical observations and chemical analyses

Concentrate

Ore

T1

T2

TT

Concentrate

Ore

T1

T2

TT

0,000

0,001

0,010

0,100

1,000

0,001 0,01 0,1 1

Qu

anti

tati

ve r

esu

lts

stan

dar

diz

ed

w

ith

S

Chemical values standardized with S

Multispectral imaging base results

Cu

As