| Locality type: | Quarry |
| Classification |
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| Species: | Gaidonnayite |
| Formula: | Na2Zr(Si3O9) · 2H2O |
| Comments: | crystals to 3 and 4 mm are very large for species. |
| Habit: | Twinned orthorhombic prisms |
| Colour: | yellow, green white |
| Luminescent properties: | bright green |
| Quality for species: | Excellent - world class for species or very significant. (!!) |
| Abundance at site: | Very Rare |
| Confirmation |
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| Validity: | Confirmed |
| Confirmation Methods: | Raman Spectroscopy |
| Associated Minerals Based on Photo Data: |
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| Analcime | ⓘ10 photos of Gaidonnayite associated with Analcime at this locality. |
| Burbankite | ⓘ10 photos of Gaidonnayite associated with Burbankite at this locality. |
| Natrolite | ⓘ8 photos of Gaidonnayite associated with Natrolite at this locality. |
| Ilmenite | ⓘ7 photos of Gaidonnayite associated with Ilmenite at this locality. |
| Fluorite | ⓘ3 photos of Gaidonnayite associated with Fluorite at this locality. |
| Chlorite Group | ⓘ2 photos of Gaidonnayite associated with Chlorite Group at this locality. |
| Ankerite | ⓘ2 photos of Gaidonnayite associated with Ankerite at this locality. |
| Data |
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| Mineral Data: | Click here to view Gaidonnayite data |
| Locality Data: | Click here to view Prefeitura quarry, Poços de Caldas, Minas Gerais, Brazil |
| Photo Gallery | View Gallery (4 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 475696 |
| Long-form Identifier: | 1:3:475696:5 |
| GUID (UUID V4): | c0f916f2-eef1-4c0e-a601-e97183f02432 |
| Nearest other occurrences of Gaidonnayite |
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| 10.6km (6.6 miles) | ⓘBortolan quarry, Poços de Caldas, Minas Gerais, Brazil |
| References |
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| Reference Search (possible matching items) |
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 | Gomes, Celso de Barros, Azzone, Rogério Guitarrari, Rojas, Gaston Eduardo Enrich, Guarino, Vincenza, Ruberti, Excelso (2021) Agpaitic Alkaline Rocks in Southern Brazilian Platform: A Review. Minerals, 11 (9) 934 doi:10.3390/min11090934 | Journal (article/letter/editorial) | | Rocks in Southern Brazilian Platform: A Review Celso de Barros Gomes 1, *, Rogério Guitarrari Azzone 1 ,... University of São Paulo, São Paulo 05508-080, Brazil; rgazzone@usp.br (R.G.A.); gastonenrich@usp.br...occurrences located in southern Brazil and at the border between Brazil and Paraguay. All the Brazilian...Triassic. The most significant occurrence is Poços de Caldas, the largest alkaline massif in South America...main to late-magmatic Main References 1 Poços de Caldas 79–87 (Ar-Ar, K-Ar) 2 Itatiaia 67.5–71 |  | | Book | | Mineral Synonyms Special Publication 2 (1999) J . de Fourestier Atlas of Micromorphology of Mineral Alteration...10 (2008) Atlas of Ore Minerals: W.H . Paar, M.K. de Brodtkorb, Focus on Epithermal Deposits of Argentina...Saint-Hilaire pluton 36 Geology of the Poudrette quarry Miarolitic cavities in nepheline syenite Sodalite...progressed well through repeated visits to the operating quarry and collaborations with visiting professionals...chiseling away at the quarry walls. Intrigued, they later ventured into the quarry and discovered what |
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Prefeitura quarry, Poços de Caldas, Minas Gerais, Brazil