Comparison of the assay and hyperspectral datas#

The assay file contains the Hole_ID of every drill core, their position in the drill, the chemical composition of the sample (Fe, Fe2O3, P, S, SiO2, Al2O3, MnO, Mn, CaO, K2O, MgO, Na2O, TiO2) and the loss-on-ignition percentage. The hyperspectral file contains the Hole_ID of every borehole, their position in the drill, the chemical composition of each sample (Fe, Al2O3, SiO2, K2O, CaO, MgO, TiO2, P, S, Mn), the loss-on-ignition percentage and other informations about the minerals in the sample.

The common data between these two files are the Hole_ID, the depth, most columns about chemical composition (Fe, Al2O3, SiO2, K2O, CaO, MgO, TiO2, P, S, Mn) and the loss-on-ignition percentage.

import numpy as np
import pandas as pd
import geolime as geo
from pyproj import CRS
import seaborn as sns
import pyvista as pv

pv.set_jupyter_backend('panel')


geo.Logger().set_level(25)
# Format Pandas display for clarity and readability
pd.set_option("display.max_rows", 10)
pd.set_option("display.max_columns", 500)

/tmp/ipykernel_4867/3314990538.py:8: PyVistaDeprecationWarning: `panel` backend is deprecated and is planned for future removal.
  pv.set_jupyter_backend('panel')

We want to compare the Hole_ID of the assay and hyperspectral file to know if they have some drill core in common.

First we need to import these data from .csv files.

Merging Interval Files#

Assay File reading and formatting#

assay = geo.datasets.load("rocklea_dome/assay.csv")
assay
Hole_ID From To Sample_ID Fe Fe2o3 P S SiO2 Al2O3 MnO Mn CaO K2O MgO Na2O TiO2 LOI LOI_100
0 RKC001 35.0 36.0 36.0 0.0 0 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0.0
1 RKC001 36.0 37.0 37.0 0.0 0 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0.0
2 RKC001 37.0 38.0 38.0 0.0 0 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0.0
3 RKC001 38.0 39.0 39.0 0.0 0 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0.0
4 RKC001 39.0 40.0 40.0 0.0 0 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0.0
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
17461 RKD010 0.0 44.0 NaN 0.0 0 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0.0
17462 RKD011 0.0 42.5 NaN 0.0 0 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0.0
17463 RKD013 0.0 30.0 NaN 0.0 0 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0.0
17464 RKD014 0.0 44.0 NaN 0.0 0 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0.0
17465 RKD015 0.0 41.0 NaN 0.0 0 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0.0

17466 rows × 19 columns

Some columns have string values named LNR, replacing them to NaN will allow comparisons with other number columns

assay.dtypes

Hole_ID       object
From         float64
To           float64
Sample_ID    float64
Fe           float64
              ...   
MgO          float64
Na2O         float64
TiO2          object
LOI           object
LOI_100      float64
Length: 19, dtype: object

assay.eq("LNR").any()

Hole_ID      False
From         False
To           False
Sample_ID    False
Fe           False
             ...  
MgO          False
Na2O         False
TiO2          True
LOI           True
LOI_100      False
Length: 19, dtype: bool

assay.replace("LNR", np.nan, inplace=True)
assay[["P", "S", "TiO2", "LOI"]] = assay[["P", "S", "TiO2", "LOI"]].apply(pd.to_numeric)

Hyperspec File reading#

hyperspec = pd.read_csv("../data/hyperspec.csv")
hyperspec
Hole_ID From To Fe_pct Al2O3 SiO2_pct K2O_pct CaO_pct MgO_pct TiO2_pct P_pct S_pct Mn_pct LOI Fe_ox_ai hem_over_goe kaolin_abundance kaolin_composition wmAlsmai wmAlsmci carbai3pfit carbci3pfit
0 RKC278 0.0 1.0 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 0.1290 891.13 0.0374 0.999 NaN NaN NaN NaN
1 RKC278 1.0 2.0 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 0.1460 892.68 0.0269 1.006 NaN NaN NaN NaN
2 RKC278 2.0 3.0 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 0.1650 895.24 NaN NaN NaN NaN NaN NaN
3 RKC278 3.0 4.0 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 0.1000 893.34 NaN NaN 0.0545 2211.83 NaN NaN
4 RKC278 4.0 5.0 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 0.0445 910.32 NaN NaN NaN NaN 0.111 2312.89
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
7103 RKC485 41.0 42.0 28.0 9.80 39.05 0.037 0.08 0.22 1.078 0.027 0.006 0.12 9.00 0.2210 912.17 0.0322 1.004 NaN NaN NaN NaN
7104 RKC485 42.0 43.0 39.0 7.67 25.15 0.029 0.09 0.25 0.689 0.046 0.008 0.11 10.11 0.1200 912.43 0.1140 1.027 NaN NaN NaN NaN
7105 RKC485 43.0 44.0 16.0 20.23 43.41 0.177 0.17 0.34 1.617 0.020 0.018 0.05 10.80 0.0956 888.81 0.0306 1.012 NaN NaN NaN NaN
7106 RKC485 44.0 45.0 12.0 12.53 50.24 0.060 0.26 0.25 1.473 0.006 0.779 0.03 16.18 0.0378 958.21 0.1100 1.025 NaN NaN NaN NaN
7107 RKD015 0.0 1.0 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN

7108 rows × 22 columns

Merge Preparation#

The comparison of the two datasets require to have the list of the different Hole_ID of both files. These lists also need to be turned into sets in order to compare them.

colonne_assay = set(assay["Hole_ID"])
colonne_hyperspec = set(hyperspec["Hole_ID"])

Now we have two sets with the different drill core that have been analyzed for each method.

len(colonne_assay)

500

len(colonne_hyperspec)

192

Next command will search all the Hole_ID both in the assay and hyperspec file.

intersection = colonne_assay.intersection(colonne_hyperspec)

len(intersection)

192

The intersection of these two files has the same length as the smallest set, so every Hole_ID of the hyperspectral file are in the assay.

The drill cores of the hyperspectral file are included in the assay file. Now we want to see if the common columns between these two files have the same values. First we need to filter the DataFrame of the assay file in order to keep only the Hole_ID that are in common with the hyperspectral file.

intersection = list(intersection)
filtred_assay = assay[assay["Hole_ID"].isin(intersection)]
filtred_assay
Hole_ID From To Sample_ID Fe Fe2o3 P S SiO2 Al2O3 MnO Mn CaO K2O MgO Na2O TiO2 LOI LOI_100
9778 RKC278 0.0 1.0 10001.0 0.00 0 0.000 0.000 0.00 0.00 0.0 0.000 0.00 0.000 0.00 0.0 0.000 0.00 0.0
9779 RKC278 1.0 2.0 10002.0 0.00 0 0.000 0.000 0.00 0.00 0.0 0.000 0.00 0.000 0.00 0.0 0.000 0.00 0.0
9780 RKC278 2.0 3.0 10003.0 0.00 0 0.000 0.000 0.00 0.00 0.0 0.000 0.00 0.000 0.00 0.0 0.000 0.00 0.0
9781 RKC278 3.0 4.0 10004.0 0.00 0 0.000 0.000 0.00 0.00 0.0 0.000 0.00 0.000 0.00 0.0 0.000 0.00 0.0
9782 RKC278 4.0 5.0 10005.0 0.00 0 0.000 0.000 0.00 0.00 0.0 0.000 0.00 0.000 0.00 0.0 0.000 0.00 0.0
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
17379 RKC485 13.0 14.0 17215.0 10.73 0 0.003 0.021 48.30 21.94 0.0 0.001 0.92 0.055 2.04 0.0 1.379 9.84 0.0
17380 RKC485 10.0 11.0 17212.0 11.74 0 0.005 0.023 46.01 19.45 0.0 0.001 2.23 0.063 2.39 0.0 1.699 10.59 0.0
17381 RKC485 11.0 12.0 17213.0 11.25 0 0.002 0.010 48.25 18.76 0.0 0.001 1.84 0.054 2.49 0.0 1.407 9.92 0.0
17382 RKC485 12.0 13.0 17214.0 8.41 0 0.001 0.007 49.28 19.61 0.0 0.001 3.75 0.058 2.58 0.0 1.239 11.19 0.0
17465 RKD015 0.0 41.0 NaN 0.00 0 0.000 0.000 0.00 0.00 0.0 0.000 0.00 0.000 0.00 0.0 0.000 0.00 0.0

7235 rows × 19 columns

The next operation will delete every sample of the assay file that is not in the hyperspectral file and make sure that we have the exact same number of Hole_ID in both files.

assay_final = hyperspec.merge(filtred_assay, on=["Hole_ID", "From", "To"], how="left")
assay_final.sort_values(by=["Hole_ID", "From"], inplace=True)
assay_final
Hole_ID From To Fe_pct Al2O3_x SiO2_pct K2O_pct CaO_pct MgO_pct TiO2_pct P_pct S_pct Mn_pct LOI_x Fe_ox_ai hem_over_goe kaolin_abundance kaolin_composition wmAlsmai wmAlsmci carbai3pfit carbci3pfit Sample_ID Fe Fe2o3 P S SiO2 Al2O3_y MnO Mn CaO K2O MgO Na2O TiO2 LOI_y LOI_100
0 RKC278 0.0 1.0 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 0.1290 891.13 0.0374 0.999 NaN NaN NaN NaN 10001.0 0.00 0.0 0.000 0.000 0.00 0.00 0.0 0.00 0.00 0.000 0.00 0.0 0.000 0.00 0.0
1 RKC278 1.0 2.0 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 0.1460 892.68 0.0269 1.006 NaN NaN NaN NaN 10002.0 0.00 0.0 0.000 0.000 0.00 0.00 0.0 0.00 0.00 0.000 0.00 0.0 0.000 0.00 0.0
2 RKC278 2.0 3.0 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 0.1650 895.24 NaN NaN NaN NaN NaN NaN 10003.0 0.00 0.0 0.000 0.000 0.00 0.00 0.0 0.00 0.00 0.000 0.00 0.0 0.000 0.00 0.0
3 RKC278 3.0 4.0 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 0.1000 893.34 NaN NaN 0.0545 2211.83 NaN NaN 10004.0 0.00 0.0 0.000 0.000 0.00 0.00 0.0 0.00 0.00 0.000 0.00 0.0 0.000 0.00 0.0
4 RKC278 4.0 5.0 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 0.0445 910.32 NaN NaN NaN NaN 0.111 2312.89 10005.0 0.00 0.0 0.000 0.000 0.00 0.00 0.0 0.00 0.00 0.000 0.00 0.0 0.000 0.00 0.0
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
7103 RKC485 41.0 42.0 28.0 9.80 39.05 0.037 0.08 0.22 1.078 0.027 0.006 0.12 9.00 0.2210 912.17 0.0322 1.004 NaN NaN NaN NaN 17244.0 28.01 0.0 0.027 0.006 39.05 9.80 0.0 0.12 0.08 0.037 0.22 0.0 1.078 9.00 0.0
7104 RKC485 42.0 43.0 39.0 7.67 25.15 0.029 0.09 0.25 0.689 0.046 0.008 0.11 10.11 0.1200 912.43 0.1140 1.027 NaN NaN NaN NaN 17245.0 38.60 0.0 0.046 0.008 25.15 7.67 0.0 0.11 0.09 0.029 0.25 0.0 0.689 10.11 0.0
7105 RKC485 43.0 44.0 16.0 20.23 43.41 0.177 0.17 0.34 1.617 0.020 0.018 0.05 10.80 0.0956 888.81 0.0306 1.012 NaN NaN NaN NaN 17246.0 15.53 0.0 0.020 0.018 43.41 20.23 0.0 0.05 0.17 0.177 0.34 0.0 1.617 10.80 0.0
7106 RKC485 44.0 45.0 12.0 12.53 50.24 0.060 0.26 0.25 1.473 0.006 0.779 0.03 16.18 0.0378 958.21 0.1100 1.025 NaN NaN NaN NaN 17247.0 12.22 0.0 0.006 0.779 50.24 12.53 0.0 0.03 0.26 0.060 0.25 0.0 1.473 16.18 0.0
7107 RKD015 0.0 1.0 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN

7108 rows × 38 columns

Merged Data Verification#

This new file allows to make comparison between the data from the assay file (obtain by a XRF analysis) and the data from the hyperspectral analysis.

First we can compare the Fe weight percentage :

sns.scatterplot(data=assay_final, x="Fe", y="Fe_pct");
../_images/ffc032c1428353c99005345f7e147aa6ae4aaf482068b7e8dd105500d01f9a29.png

Most of the measures are similar for both methods. We can do the same for the Al2O3 weight percentage :

sns.scatterplot(data=assay_final, x="Al2O3_x", y="Al2O3_y");
../_images/6857492ea0a8f2db9e86aee23bf9c3d9749a495e4b1af6e65c71037730d55437.png 
assay_final.drop(columns=["Al2O3_y", "LOI_x", "LOI_y"], inplace=True)
assay_final.rename(columns={"Al2O3_x": "Al2O3"}, inplace=True)

GeoLime Drillholes Creation#

The next command will use the Geo Lime dictionary to draw an interactive map of the ferric concentration for each method (one for the hyperspectral datas and one for the assay datas). Firs we need to import the survey and collar file to have all the informations about the drill cores.

survey = geo.datasets.load("rocklea_dome/survey.csv")
collar = geo.datasets.load("rocklea_dome/collar.csv")

Project Definition#

geo.Project().set_crs(CRS("EPSG:20350"))

Drillholes Creation#

Using Assay Data Only#

da = geo.create_drillholes(
    name="rck_assay", 
    collar=collar, 
    assays=assay, 
    survey=survey
)

da.plot_2d(property="Fe", agg_method="mean", interactive_map=True)
Make this Notebook Trusted to load map: File -> Trust Notebook

Using Merged Data (Assay data & Hyperspectral data)#

df = geo.create_drillholes(
    name="rck_assay_final", 
    collar=collar, 
    assays=assay_final, 
    survey=survey
)

df.to_file("../data/dh_hyper")

df.plot_2d(property="Fe", agg_method="mean", interactive_map=True)
Make this Notebook Trusted to load map: File -> Trust Notebook

Using Hyperspectral Data only#

We can do the same with hyperspectral data and draw the map of the average iron weight concentration given by these measures.

dh = geo.create_drillholes(
    name="rck_hs", 
    collar=collar, 
    assays=hyperspec, 
    survey=survey
)

dh.plot_2d(property="Fe_pct", agg_method="mean", interactive_map=True)
Make this Notebook Trusted to load map: File -> Trust Notebook

The first thing we can notice is that there is a concentration of high average iron concentration in the eastern drill core of the original assay data. That is on those drill core that the hyperspectral data have been taken. Then we can also notice the strong similarity between the iron average concentration between the hyperspectral data and the assay data for the same drill holes.

3D Visualisation#

df_pv = df.to_pyvista('Fe_pct')

pl = pv.Plotter()
pl.add_mesh(df_pv.tube(radius=10))
pl.set_scale(zscale=20)

pl.show()