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README.md

@@ -12,8 +12,7 @@ tags:
 - earth-science
 - gold
 - copper
-- geochemistry
-- geohazards
+- coal
 size_categories:
 - 1M<n<10M
 language:
@@ -23,19 +22,34 @@ pretty_name: Global Drillhole Database
 
 # Global Drillhole Database
 
-**3,807,656+ records** from geological surveys worldwide - drill holes, mineral occurrences, geochemical samples, and geological surveys.
+**3,958,882+ drill holes** from geological surveys worldwide.
 
 ## Dataset Summary
 
-| Region | Records | Source |
-|--------|---------|--------|
-| 🇦🇺 Western Australia | 3,020,000 | DMIRS WAMEX |
-| 🇨🇦 Canada | 378,666 | Provincial surveys |
-| 🇦🇺 South Australia | 200,164 | SARIG |
-| 🇹🇭 **Thailand** | **110,987** | **DMR ArcGIS** |
-| 🇬🇱 Greenland | 59,715 | GreenMin.gl + EMODnet |
-| 🇦🇺 Tasmania | 38,124 | MRT |
-| **TOTAL** | **3,807,656** | |
+| Region | Records | Type | Source |
+|--------|---------|------|--------|
+| 🇦🇺 Western Australia | 3,020,000 | Drill holes | DMIRS WAMEX |
+| 🇨🇦 Canada | 378,666 | Drill holes + occurrences | Provincial surveys |
+| 🇿🇦 **South Africa** | **262,213** | **Boreholes + samples** | **CGS Portal** |
+| 🇦🇺 South Australia | 200,164 | Drill holes | SARIG |
+| 🇬🇱 Greenland | 59,715 | Drill cores + samples | GEUS |
+| 🇦🇺 Tasmania | 38,124 | Boreholes | MRT |
+| **TOTAL** | **3,958,882** | | |
+
+### 🇿🇦 South Africa Breakdown (NEW!)
+
+| Source | Type | Records |
+|--------|------|---------|
+| CGS Borehole Positions | Exploration | 67,330 |
+| CGS Coal & Core | Coal Exploration | 65,535 |
+| CGS Dolomitic Land | Karst Investigation | 64,418 |
+| CGS Geotechnical | Engineering | 25,471 |
+| CGS Trial Holes | Test Pits | 18,874 |
+| CGS Dolomite Reports | Reports | 8,847 |
+| CGS Petrophysics | Rock Samples | 11,738 |
+| **Total** | | **262,213** |
+
+**Note:** An additional ~282,890 boreholes are available in South Africa's National Groundwater Archive (NGA) with free registration at https://www.dws.gov.za/NGANet/
 
 ### Canada Breakdown
 - Quebec (SIGEOM): 185,322
@@ -46,74 +60,71 @@ pretty_name: Global Drillhole Database
 - Alberta (AGS): 266
 
 ### Greenland Breakdown
-| Dataset | Records |
-|---------|---------|
-| Rock Samples | 20,000 |
-| Ujarassiorit | 20,000 |
-| Stream Sediments | 9,787 |
-| Drill Cores | 4,817 |
-| Heavy Minerals | 1,692 |
-| Mineral Occurrences | 1,276 |
-| EMODnet Offshore | 550 |
-| Others | 1,593 |
-
-### Thailand Breakdown
-| Dataset | Records |
-|---------|---------|
-| Landslide Susceptibility | 50,000 |
-| Landslide Investigation | 12,959 |
-| Village Risk | 11,475 |
-| Rock Units 250K | 7,093 |
-| Natural Toxic Risk | 6,801 |
-| Mineral Areas | 5,546 |
-| Seafloor Chemistry | 4,088 |
-| Mineral Occurrences | 4,064 |
-| Sinkhole Risk Areas | 2,000 |
-| Heritage/Tourism Sites | 2,562 |
-| **Mineral Drill Holes** | **323** |
-| **Coastal Boreholes** | **250** |
-| Others | 3,826 |
+- Rock Samples: 20,000
+- Ujarassiorit (citizen samples): 20,000
+- Stream Sediments: 9,787
+- Drill Cores: 4,817
+- Heavy Minerals: 1,692
+- Soil Samples: 1,494
+- Mineral Occurrences: 1,276
+- EMODnet Offshore: 550
+- Scree Samples: 99
 
 ## Schema
 
 | Field | Type | Description |
 |-------|------|-------------|
-| `id` | string | Unique identifier |
-| `name` | string | Hole/sample name |
+| `id` | string | Unique identifier / hole ID |
+| `name` | string | Hole name |
 | `lat` | float | Latitude (WGS84) |
 | `lon` | float | Longitude (WGS84) |
 | `region` | string | State/Province/Country |
-| `country` | string | Country code |
+| `country` | string | Country code (CA, AU, US, GL, ZA) |
 | `source` | string | Data source |
-| `type` | string | drill_hole, mineral_occurrence, geochemistry, etc. |
-| `commodity` | string | Target commodity |
+| `type` | string | drill_hole, mineral_occurrence, borehole, rock_sample |
+| `commodity` | string | Target commodity (Gold, Copper, Coal, etc.) |
 | `depth` | float | Total depth (meters) |
-| `year` | int | Year drilled/sampled |
-| `company` | string | Operator/company |
+| `year` | int | Year drilled |
+| `url` | string | Source URL |
+
+## Data Files
+
+| File | Records | Format |
+|------|---------|--------|
+| `data/western_australia.parquet` | 3,020,000 | Parquet |
+| `data/canada.json` | 378,666 | JSON |
+| `data/south_africa.parquet` | 262,213 | Parquet |
+| `data/south_africa.json` | 262,213 | JSON |
+| `data/south_australia.json` | 200,164 | JSON |
+| `data/greenland.json` | 59,715 | JSON |
+| `data/tasmania.json` | 38,124 | JSON |
 
 ## Usage
 
 ```python
 from datasets import load_dataset
 
-# Load all data
+# Load all regions
 ds = load_dataset("kcribb12/global-drillhole-database")
 
 # Load specific region
-thailand = load_dataset("kcribb12/global-drillhole-database", data_files="data/thailand.json")
-greenland = load_dataset("kcribb12/global-drillhole-database", data_files="data/greenland.json")
+south_africa = load_dataset("kcribb12/global-drillhole-database", data_files="data/south_africa.parquet")
 canada = load_dataset("kcribb12/global-drillhole-database", data_files="data/canada.json")
+
+# Filter by commodity
+gold_holes = ds.filter(lambda x: x['commodity'] == 'Gold')
+coal_holes = ds.filter(lambda x: x['commodity'] == 'Coal')
 ```
 
-## Data Sources
+## Sources
 
-- **Western Australia**: DMIRS SLIP API (WAMEX)
-- **Canada**: SIGEOM, ODHD, MINFILE, SMDI, MGS, AGS
-- **South Australia**: SARIG WFS
-- **Thailand**: DMR ArcGIS REST API (gisportal.dmr.go.th)
-- **Tasmania**: MRT open data
-- **Greenland**: GreenMin.gl WFS + EMODnet GEUS
+- **Western Australia**: DMIRS SLIP Portal (https://dasc.dmirs.wa.gov.au/)
+- **Canada**: Provincial Geological Surveys (SIGEOM, ODHD, MINFILE, etc.)
+- **South Africa**: Council for Geoscience (https://maps.geoscience.org.za)
+- **South Australia**: SARIG (https://map.sarig.sa.gov.au/)
+- **Greenland**: GEUS (https://data.geus.dk/)
+- **Tasmania**: MRT (https://www.mrt.tas.gov.au/)
 
 ## License
 
-CC-BY 4.0 - Free to use with attribution
+Data aggregated from public geological survey sources. Individual region licenses apply.