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Company > Resources > 4 – Technical Reports and Essays > 📝 3- SRI Report – Solar Reflectance Index of Grey Marengo Marble

📝 3- SRI Report – Solar Reflectance Index of Grey Marengo Marble

Informe parcial del índice de reflectancia solar (SRI) del Mármol Gris Marengo. Documento completo disponible para inversores interesados en adquirir canteras de mármol de calidad.

The SRI (Solar Reflectance Index) report for Grey Marengo Marble from Alconera, carried out by TECNALIA, certifies the stone’s ability to reflect solar radiation and mitigate the “urban heat island” effect. This test strengthens its value as a strategic material for projects in extreme climate conditions. The grey marble called Gris Marengo in one of the high-quality marble varieties from the Marble deposit at Alconera, Spain, currently for sale.

Why the SRI matters when evaluating marble quarries for sale

The SRI (Solar Reflectance Index) is a key factor in sustainable architecture and energy-efficient design.
The official test conducted by TECNALIA (Research and Technological Development Center, Spain) confirms that Grey Marengo Marble demonstrates a high solar reflectance index, comparable to engineered materials designed specifically for thermal mitigation.

Grey Marengo Marble: energy efficiency and global project validation

This makes it an excellent choice for exterior cladding and paving in hot climates.
In fact, this report was decisive for the selection of Grey Marengo in the GNPC headquarters project in Takoradi, Ghana, where mitigating heat absorption was critical in such harsh environmental conditions.


The attached image shows an extract of the official SRI report by TECNALIA.
The full report is available only after signing a Non-Disclosure Agreement (NDA) to qualified investors interested in eventually acquiring marble quarries in Spain.

📩 Interested parties can request the full technical dossier or arrange a site visit.


Varieties of Alconera marble


The Alconera quarry offers an exquisite chromatic variety:

Blanco Alconera (White)
Gris Marengo (Gray)
Negro Pinta (Black)
Negro Laguna (Black)
Rojo Coralo (Red)
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