| Classification |
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| Species: | Laumontite |
| Formula: | CaAl2Si4O12 · 4H2O |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Laumontite data |
| Locality Data: | Click here to view Val di Perga, Castellina Marittima, Pisa Province, Tuscany, Italy |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 391683 |
| Long-form Identifier: | 1:3:391683:4 |
| GUID (UUID V4): | a73759b3-5c14-49a1-b4e6-4d538d255c3e |
| Nearest other occurrences of Laumontite |
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| 18.8km (11.7 miles) | ⓘMontecatini Mine (Caporciano Mine), Montecatini Val di Cecina, Pisa Province, Tuscany, Italy |
| 63.7km (39.6 miles) | ⓘFalciani bridge, Impruneta, Metropolitan City of Florence, Tuscany, Italy |
| 74.9km (46.5 miles) | ⓘCrino di Serra, Marciana, Livorno Province, Tuscany, Italy |
| 76.0km (47.2 miles) | ⓘCrevolone Torrent gabbro outcrop, La Befa, Murlo, Siena Province, Tuscany, Italy |
| 78.1km (48.5 miles) | ⓘFonte del Prete, San Piero in Campo, Campo nell'Elba, Livorno Province, Tuscany, Italy |
| 93.4km (58.0 miles) | ⓘCa' Madreva (Fosso di Vivalle; Rio di Rame; Capanna Foresta), Gaggio Montano, Metropolitan City of Bologna, Emilia-Romagna, Italy |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (article/letter/editorial) | | OPTICAL PROPERTIES AND CHEMICAL COMPOSITION OF LAUMONTITE AND LEONHARDITE Wrru n Nore oN Rpcrorqlr OccunnBltcps...and' Petrology,Cambrid'ge (England,). Assrnect Laumontite is found to be a large-scale replacement product...conditions. The well-known partial dehydration of laumontite to yield leonhardite is readily reversible, and...01 A, After soaking in water to convert to the laumontite form, the (100) P:112.0"+0.2'. Iattice spacing...plagioclase and of the zeolite type. The composition of laumontite can be e{pressed by the formula: Ca,(Na, K)rAlr"asSi%-o |  | | Book (volume) | | 386 Chabazite, Gmelinite, Levyne ...... 387 Laumontite-Leonhardite, Mordenite, Gismondine . 401 Zeolite...the effect of the twin axis on the vertical diads Di and D2 is to bring each into almost exact coincidence...(“potash—anorthoclase”), tuffaceous liparite, Taiji Kii province, Japan (Kimizuka, 1932) (Includes P2O5 0-03)....E. Spencer. 16. Sanidine, Mt. Cimino, Viterbo, Italy (Spencer, 1937, p. 476 footnote). Anal. E. Spencer...6. Crystals of anorthoclase, tuff, Monte Guardia di Mezzo, Ustioa, Sicily (Montalto, 1937) Gem0l°’ ** |
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