The mineral that started the family's mining history: high-purity siliceous diatomite, mined in San Juan.
Diatomite (or diatomaceous earth) is a siliceous sedimentary rock formed from the fossilized remains of microalgae (diatoms). It stands out for its high porosity and filtering/absorbent capacity, and is used in liquid filtration, as a mineral filler in paints and plastics, in the animal feed industry, and in pest control, among other applications.
It is mined from the family's own deposits in the Iglesia and Ullum departments, San Juan.
| SiO₂ | 77.1% |
| Al₂O₃ | 7.1% |
| Fe₂O₃ | 1.3% |
| CaO | 1.1% |
Chemical analysis: Instituto de Investigaciones Mineras, Universidad Nacional de San Juan (IIM-UNSJ), 2024.
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