| Locality type: | Mine |
| Classification |
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| Species: | Gaudefroyite |
| Formula: | Ca4Mn3+2-3(BO3)3(CO3)(O,OH)3 |
| Comments: | Largest crystals were up to 5cm, specimens of 1cm are common. Associated minerals are andradite, calcite, ettringite, hausmannite and hematite.
The bronze hair-like specimens have been found in association with baryte, calcite, gypsum, hausmannite and hematite. |
| Habit: | Prismatic, hair-like, fibrous. |
| Colour: | Black, copper-brown |
| Quality for species: | Excellent - world class for species or very significant. (!!) |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals: |
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| Associates: | Baryte
Hausmannite
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| Associated Minerals Based on Photo Data: |
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| Andradite | 51 |
| Baryte | 32 |
| Ettringite | 21 |
| Calcite | 19 |
| Hausmannite | 16 |
| Hematite | 12 |
| Sturmanite | 8 |
| Henritermierite | 5 |
| Oyelite | 5 |
| Thaumasite | 5 |
| Manganite | 3 |
| Quartz | 1 |
| Brucite | 1 |
| Data |
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| Mineral Data: | Click here to view Gaudefroyite data |
| Locality Data: | Click here to view N'Chwaning II Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa |
| Photo Gallery | View Gallery (49 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 261295 |
| Long-form Identifier: | 1:3:261295:9 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Gaudefroyite |
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| 0.6km (0.3 miles) | ⓘN'Chwaning I Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa |
| 1.8km (1.1 miles) | ⓘN'Chwaning III Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa |
| 2.7km (1.7 miles) | ⓘWessels Mine, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa |
| 3.1km (1.9 miles) | ⓘBlack Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa |
| References |
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N'Chwaning II Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa