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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 03350naa a2200373 4500 | |
| 001 | oai:DiVA.org:nrm-3377 | |
| 003 | SwePub | |
| 008 | 191114s2019 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-33772 URI |
| 024 | 7 | a https://doi.org/10.3390/min91107022 DOI |
| 040 | a (SwePub)nrm | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Biagioni, Cristianu Università di Pisa, Italy4 aut |
| 245 | 1 0 | a Crystal chemistry of sulfates from the Apuan Alps (Tuscany, Italy). V. Scordariite, K8(Fe3+0.67ο0.33)[Fe3+3O(SO4)6(H2O)3)]2(H2O)11 , a new metavoltine-related mineral |
| 264 | c 2019-11-13 | |
| 264 | 1 | b MDPI AG,c 2019 |
| 338 | a electronic2 rdacarrier | |
| 520 | a The new mineral species scordariite, K8(Fe3+0.67□0.33)[Fe3+3O(SO4)6(H2O)3]2(H2O)11, was discovered in the Monte Arsiccio mine, Apuan Alps, Tuscany, Italy. It occurs as pseudo-hexagonal tabular crystals, yellowish to brownish in color, up to 0.5 mm in size. Cleavage is perfect on {0001}. It is associated with giacovazzoite, krausite, gypsum, jarosite, alum-(K), and magnanelliite. Electron microprobe analyses give (wt %): SO3 47.31, Al2O3 0.66, Fe2O3 24.68, FeO 0.69, Na2O 0.52, K2O 17.36, H2Ocalc 15.06, total 106.28. The partitioning of Fe between Fe2+ and Fe3+ was based on Mössbauer spectroscopy. On the basis of 67 O atoms per formula unit, the empirical chemical formula is (K7.50Na0.34)Σ7.84(Fe3+6.29Al0.26Fe2+0.20)Σ6.75S12.02O50·17H2O. The ideal end-member formula can be written as K8(Fe3+0.67□0.33)[Fe3+3O(SO4)6(H2O)3]2(H2O)11. Scordariite is trigonal, space group R-3, with (hexagonal setting) a = 9.7583(12), c = 53.687(7) Å, V = 4427.4(12) Å3, Z = 3. The main diffraction lines of the observed X-ray powder pattern are [d(in Å), estimated visual intensity]: 8.3, strong; 6.6, medium; 3.777, medium; 3.299, medium; 3.189, medium; 2.884, strong. The crystal structure of scordariite has been refined using X-ray single-crystal data to a final R1 = 0.057 on the basis of 1980 reflections with Fo > 4σ(Fo) and 165 refined parameters. It can be described as a layered structure formed by three kinds of layers. As with other metavoltine-related minerals, scordariite is characterized by the occurrence of the [Fe3+3O(SO4)6(H2O)3]5− heteropolyhedral cluster. | |
| 650 | 7 | a NATURVETENSKAPx Geovetenskap och miljövetenskapx Geokemi0 (SwePub)105062 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geochemistry0 (SwePub)105062 hsv//eng |
| 653 | a The changing Earth | |
| 653 | a Den föränderliga jorden | |
| 700 | 1 | a Bindi, Lucau Università di Firenze, Italy4 aut |
| 700 | 1 | a Mauro, Danielau Università di Pisa4 aut |
| 700 | 1 | a Hålenius, Ulfu Naturhistoriska riksmuseet,Enheten för geovetenskap4 aut0 (Swepub:nrm)ulfhalen |
| 710 | 2 | a Università di Pisa, Italyb Università di Firenze, Italy4 org |
| 773 | 0 | t Mineralsd : MDPI AGg 9:11, s. 1-14q 9:11<1-14x 2075-163X |
| 856 | 4 | u https://nrm.diva-portal.org/smash/get/diva2:1370114/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print |
| 856 | 4 | u https://www.mdpi.com/2075-163X/9/11/702/pdf |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-3377 |
| 856 | 4 8 | u https://doi.org/10.3390/min9110702 |
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