Prossima pubblicazione.
Referenza:
▪ Suárez, M., García-Rivas, J., Morales Sánchez-Migallón, J., García-Romero, E. (2018): Spanish palygorskites: geological setting, mineralogical, textural and crystal-chemical characterization. European Journal of Mineralogy, 30, (in press).
Spanish palygorskites: mineralogical, textural and crystal-chemical characterization
- Marco E. Ciriotti
- Messaggi: 31645
- Iscritto il: ven 25 giu, 2004 11:31
- Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
- Contatta:
Spanish palygorskites: mineralogical, textural and crystal-chemical characterization
Marco E. Ciriotti
«Things are interesting only in so far as they relate themselves to other things»
«Things are interesting only in so far as they relate themselves to other things»
-
- Messaggi: 616
- Iscritto il: mer 31 gen, 2007 16:44
- Località: Cavour - Torino
Re: Spanish palygorskites: mineralogical, textural and crystal-chemical characterization
Ciao Marco,
anche da noi, nel Canavese, é stata trovata.
Potrebbe essere un lavoro necessario anche per la nostra, oppure é un lavoro nuovo e valevole per tutte le località?
anche da noi, nel Canavese, é stata trovata.
Potrebbe essere un lavoro necessario anche per la nostra, oppure é un lavoro nuovo e valevole per tutte le località?
-------------------------------------------------------------------------------
Le difficoltà della vita piegano alcuni uomini, ma ne rafforzano altri.
Nelson Mandela
La paura genera energia, ma l' uomo deve sognare per salvarsi.
Walter Bonatti
Le difficoltà della vita piegano alcuni uomini, ma ne rafforzano altri.
Nelson Mandela
La paura genera energia, ma l' uomo deve sognare per salvarsi.
Walter Bonatti
- Marco E. Ciriotti
- Messaggi: 31645
- Iscritto il: ven 25 giu, 2004 11:31
- Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
- Contatta:
Re: Spanish palygorskites: mineralogical, textural and crystal-chemical characterization
Credo (occorrerebbe leggere l'articolo non ancora pubblicato) che in buona parte possa valere per tutte le località, anche per la palygorskite di Montestrutto.Ciao Marco,
anche da noi, nel Canavese, é stata trovata.
Potrebbe essere un lavoro necessario anche per la nostra, oppure é un lavoro nuovo e valevole per tutte le località?
Marco E. Ciriotti
«Things are interesting only in so far as they relate themselves to other things»
«Things are interesting only in so far as they relate themselves to other things»
- Marco E. Ciriotti
- Messaggi: 31645
- Iscritto il: ven 25 giu, 2004 11:31
- Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
- Contatta:
Re: Spanish palygorskites: mineralogical, textural and crystal-chemical characterization
Referenza:
▪ Suárez, M., García-Rivas, J., Morales Sánchez-Migallón, J., García-Romero, E. (2018): Spanish palygorskites: geological setting, mineralogical, textural and crystal-chemical characterization. European Journal of Mineralogy, 30, (in press).
Abstract:
A representative group of palygorskites from the six most important Spanish deposits and six other occurrences were studied comparing their mineralogy, textural features, crystal-chemistry, and surface properties. These palygorskites have different geological origin: (1) sedimentary in large Tertiary continental basins, (2) hydrothermally altered volcanic rocks in the southern Spanish Peninsula, also Tertiary in age; and (3) fault-hosted pure palygorskites. The most common impurities are quartz and carbonates, both calcite and dolomite, but also feldspar, illite, smectite, and sepiolite have been identified. The structural formulae obtained show great variability between samples, as well as with respect to the theoretical formula for palygorskite, as they range from magnesian to aluminous palygorskites. The most common fibre length ranges between 1 and 10 µm but the palygorskites of hydrothermal origin are much longer, with lengths over 10 µm. The shorter fibres give rise to tightened textures, while longer fibres usually generate more open textures. These properties, along with the degree of compaction, condition the porosity of the sample, which in turn influences its surface properties. The specific surface areas obtained range between 30 m2 g−1 and 263 m2 g−1, depending on the impurities content and on the texture and crystal-chemistry; the highest values correspond to Mg-rich palygorskite.
▪ Suárez, M., García-Rivas, J., Morales Sánchez-Migallón, J., García-Romero, E. (2018): Spanish palygorskites: geological setting, mineralogical, textural and crystal-chemical characterization. European Journal of Mineralogy, 30, (in press).
Abstract:
A representative group of palygorskites from the six most important Spanish deposits and six other occurrences were studied comparing their mineralogy, textural features, crystal-chemistry, and surface properties. These palygorskites have different geological origin: (1) sedimentary in large Tertiary continental basins, (2) hydrothermally altered volcanic rocks in the southern Spanish Peninsula, also Tertiary in age; and (3) fault-hosted pure palygorskites. The most common impurities are quartz and carbonates, both calcite and dolomite, but also feldspar, illite, smectite, and sepiolite have been identified. The structural formulae obtained show great variability between samples, as well as with respect to the theoretical formula for palygorskite, as they range from magnesian to aluminous palygorskites. The most common fibre length ranges between 1 and 10 µm but the palygorskites of hydrothermal origin are much longer, with lengths over 10 µm. The shorter fibres give rise to tightened textures, while longer fibres usually generate more open textures. These properties, along with the degree of compaction, condition the porosity of the sample, which in turn influences its surface properties. The specific surface areas obtained range between 30 m2 g−1 and 263 m2 g−1, depending on the impurities content and on the texture and crystal-chemistry; the highest values correspond to Mg-rich palygorskite.
Marco E. Ciriotti
«Things are interesting only in so far as they relate themselves to other things»
«Things are interesting only in so far as they relate themselves to other things»
- Marco E. Ciriotti
- Messaggi: 31645
- Iscritto il: ven 25 giu, 2004 11:31
- Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
- Contatta:
Re: Spanish palygorskites: mineralogical, textural and crystal-chemical characterization
Pubblicazione effettuata.
Referenza:
▪ Suárez, M., García-Rivas, J., Morales Sánchez-Migallón, J., García-Romero, E. (2018): Spanish palygorskites: geological setting, mineralogical, textural and crystal-chemical characterization. European Journal of Mineralogy, 30, 733-746.
Referenza:
▪ Suárez, M., García-Rivas, J., Morales Sánchez-Migallón, J., García-Romero, E. (2018): Spanish palygorskites: geological setting, mineralogical, textural and crystal-chemical characterization. European Journal of Mineralogy, 30, 733-746.
Marco E. Ciriotti
«Things are interesting only in so far as they relate themselves to other things»
«Things are interesting only in so far as they relate themselves to other things»
Chi c’è in linea
Visitano il forum: Nessuno e 5 ospiti