Ferraioloite from the Sítio do Castelo mine, Folgosinho (Guarda, Portugal), description and Raman spectroscopy
A zinc phosphate corresponding to ferraioloite with low Mg and high Na cation contents in interlayer space was identified in samples from the Sitio do Castelo mine, Folgosinho (Guarda, Portugal). It occurs as sky-blue, pearly lustrous, radial or irregular aggregates up to 1 mm in size composed of ve...
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| Veröffentlicht in: | Journal of geosciences (Prague) 2021-01, Vol.66 (3), p.139-146 |
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| creator | Tvrdý, J. Sejkora, J. Rosseel, P. Dolníček, Z. |
| description | A zinc phosphate corresponding to ferraioloite with low Mg and high Na cation contents in interlayer space was identified in samples from the Sitio do Castelo mine, Folgosinho (Guarda, Portugal). It occurs as sky-blue, pearly lustrous, radial or irregular aggregates up to 1 mm in size composed of very thin elongated flaky crystals. The mineral is monoclinic, space group I2/m, with unit-cell parameters refined from X-ray powder diffraction data: a = 25.417(7), b = 6.342(4), c =15.186(5) Å, ß = 90.02(4)°, V = 2448.0(17) Å3. The chemical composition generally agrees with published data for ferraioloite, but differs significantly in elements present at sites assumed to be in the interlayer of the crystal structure. The corresponding empirical formula based on 8 (PO)4 and 4 (OH) groups pfu is (Mg016Na015Ca009K001)E041Mn422(Fe2+j64 Fe3+j15Alj47)E426Zn387(PO4)8(OH)4(H2O)20. The Raman spectra and tentative assignment of observed bands are given. The most prominent bands are attributed to stretching and bending vibrations of phosphate tetrahedra and complex metal-centered polyhedra. Bands of O-H stretching vibrations are weak, and bending vibrations of water molecules were not observed. The origin of the mineral is related to in-situ supergene weathering of zwieselite-triplite and isokite-fluorapatite assemblages with admixtures of sphalerite. |
| doi_str_mv | 10.3190/jgeosci.326 |
| format | Article |
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It occurs as sky-blue, pearly lustrous, radial or irregular aggregates up to 1 mm in size composed of very thin elongated flaky crystals. The mineral is monoclinic, space group I2/m, with unit-cell parameters refined from X-ray powder diffraction data: a = 25.417(7), b = 6.342(4), c =15.186(5) Å, ß = 90.02(4)°, V = 2448.0(17) Å3. The chemical composition generally agrees with published data for ferraioloite, but differs significantly in elements present at sites assumed to be in the interlayer of the crystal structure. The corresponding empirical formula based on 8 (PO)4 and 4 (OH) groups pfu is (Mg016Na015Ca009K001)E041Mn422(Fe2+j64 Fe3+j15Alj47)E426Zn387(PO4)8(OH)4(H2O)20. The Raman spectra and tentative assignment of observed bands are given. The most prominent bands are attributed to stretching and bending vibrations of phosphate tetrahedra and complex metal-centered polyhedra. Bands of O-H stretching vibrations are weak, and bending vibrations of water molecules were not observed. The origin of the mineral is related to in-situ supergene weathering of zwieselite-triplite and isokite-fluorapatite assemblages with admixtures of sphalerite.</description><identifier>ISSN: 1802-6222</identifier><identifier>EISSN: 1803-1943</identifier><identifier>DOI: 10.3190/jgeosci.326</identifier><language>eng</language><publisher>Prague: Czech Geological Society</publisher><subject>Admixtures ; Analytical methods ; Bending ; Cations ; Chemical composition ; Coordination compounds ; Crystal structure ; Crystals ; Deformation ; Fluorapatite ; Heavy metals ; Interlayers ; Museums ; Phosphates ; Polyhedra ; Quartz ; Raman spectra ; Raman spectroscopy ; Spectrum analysis ; Sphalerite ; Stretching ; Tetrahedra ; Unit cell ; Vibrations ; Water chemistry ; X ray powder diffraction ; Zinc ; Zinc phosphate ; Zincblende</subject><ispartof>Journal of geosciences (Prague), 2021-01, Vol.66 (3), p.139-146</ispartof><rights>Copyright Czech Geological Society 2021</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a321t-37b69cd46b933f8d0b3ba7fc71b5d3e4c0f34686deddd88f1899845bfe9442293</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27915,27916</link.rule.ids></links><search><creatorcontrib>Tvrdý, J.</creatorcontrib><creatorcontrib>Sejkora, J.</creatorcontrib><creatorcontrib>Rosseel, P.</creatorcontrib><creatorcontrib>Dolníček, Z.</creatorcontrib><title>Ferraioloite from the Sítio do Castelo mine, Folgosinho (Guarda, Portugal), description and Raman spectroscopy</title><title>Journal of geosciences (Prague)</title><description>A zinc phosphate corresponding to ferraioloite with low Mg and high Na cation contents in interlayer space was identified in samples from the Sitio do Castelo mine, Folgosinho (Guarda, Portugal). It occurs as sky-blue, pearly lustrous, radial or irregular aggregates up to 1 mm in size composed of very thin elongated flaky crystals. The mineral is monoclinic, space group I2/m, with unit-cell parameters refined from X-ray powder diffraction data: a = 25.417(7), b = 6.342(4), c =15.186(5) Å, ß = 90.02(4)°, V = 2448.0(17) Å3. The chemical composition generally agrees with published data for ferraioloite, but differs significantly in elements present at sites assumed to be in the interlayer of the crystal structure. The corresponding empirical formula based on 8 (PO)4 and 4 (OH) groups pfu is (Mg016Na015Ca009K001)E041Mn422(Fe2+j64 Fe3+j15Alj47)E426Zn387(PO4)8(OH)4(H2O)20. The Raman spectra and tentative assignment of observed bands are given. The most prominent bands are attributed to stretching and bending vibrations of phosphate tetrahedra and complex metal-centered polyhedra. Bands of O-H stretching vibrations are weak, and bending vibrations of water molecules were not observed. The origin of the mineral is related to in-situ supergene weathering of zwieselite-triplite and isokite-fluorapatite assemblages with admixtures of sphalerite.</description><subject>Admixtures</subject><subject>Analytical methods</subject><subject>Bending</subject><subject>Cations</subject><subject>Chemical composition</subject><subject>Coordination compounds</subject><subject>Crystal structure</subject><subject>Crystals</subject><subject>Deformation</subject><subject>Fluorapatite</subject><subject>Heavy metals</subject><subject>Interlayers</subject><subject>Museums</subject><subject>Phosphates</subject><subject>Polyhedra</subject><subject>Quartz</subject><subject>Raman spectra</subject><subject>Raman spectroscopy</subject><subject>Spectrum analysis</subject><subject>Sphalerite</subject><subject>Stretching</subject><subject>Tetrahedra</subject><subject>Unit cell</subject><subject>Vibrations</subject><subject>Water chemistry</subject><subject>X ray powder diffraction</subject><subject>Zinc</subject><subject>Zinc phosphate</subject><subject>Zincblende</subject><issn>1802-6222</issn><issn>1803-1943</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNotkEtOwzAYhC0EElXpigtYYgOiKX7FsZeoogWpEojHOnJiu3WVxMF2Fj0Up-BiBOjqn8XM_KMPgEuMFhRLdLffGh9rt6CEn4AJFohmWDJ6-qdJxgkh52AWo6sQ4bnkBSsmwK9MCMr5xrtkoA2-hWln4Nv3V3Ieag-XKibTeNi6zszhyjdbH1238_B6Paig1Ry--JCGrWpu5lCbWAfXj9EOqk7DV9WqDsbe1CmM23x_uABnVjXRzI53Cj5WD-_Lx2zzvH5a3m8yRQlOGS0qLmvNeCUptUKjilaqsHWBq1xTw2pkKeOCa6O1FsJiIaVgeWWNZIwQSafg6r-3D_5zMDGVez-EbnxZEo5yzikr-Oi6_XfV47wYjC374FoVDiVG5S_U8gi1HKHSH4RJbQc</recordid><startdate>20210101</startdate><enddate>20210101</enddate><creator>Tvrdý, J.</creator><creator>Sejkora, J.</creator><creator>Rosseel, P.</creator><creator>Dolníček, Z.</creator><general>Czech Geological Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>4T-</scope><scope>4U-</scope><scope>7UA</scope><scope>7XB</scope><scope>88I</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>BYOGL</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>H96</scope><scope>HCIFZ</scope><scope>L.G</scope><scope>L6V</scope><scope>M2P</scope><scope>M7S</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>Q9U</scope></search><sort><creationdate>20210101</creationdate><title>Ferraioloite from the Sítio do Castelo mine, Folgosinho (Guarda, Portugal), description and Raman spectroscopy</title><author>Tvrdý, J. ; Sejkora, J. ; Rosseel, P. ; Dolníček, Z.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a321t-37b69cd46b933f8d0b3ba7fc71b5d3e4c0f34686deddd88f1899845bfe9442293</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Admixtures</topic><topic>Analytical methods</topic><topic>Bending</topic><topic>Cations</topic><topic>Chemical composition</topic><topic>Coordination compounds</topic><topic>Crystal structure</topic><topic>Crystals</topic><topic>Deformation</topic><topic>Fluorapatite</topic><topic>Heavy metals</topic><topic>Interlayers</topic><topic>Museums</topic><topic>Phosphates</topic><topic>Polyhedra</topic><topic>Quartz</topic><topic>Raman spectra</topic><topic>Raman spectroscopy</topic><topic>Spectrum analysis</topic><topic>Sphalerite</topic><topic>Stretching</topic><topic>Tetrahedra</topic><topic>Unit cell</topic><topic>Vibrations</topic><topic>Water chemistry</topic><topic>X ray powder diffraction</topic><topic>Zinc</topic><topic>Zinc phosphate</topic><topic>Zincblende</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tvrdý, J.</creatorcontrib><creatorcontrib>Sejkora, J.</creatorcontrib><creatorcontrib>Rosseel, P.</creatorcontrib><creatorcontrib>Dolníček, Z.</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Docstoc</collection><collection>University Readers</collection><collection>Water Resources Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>East Europe, Central Europe Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Engineering Collection</collection><collection>Science Database</collection><collection>Engineering Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>ProQuest Central Basic</collection><jtitle>Journal of geosciences (Prague)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tvrdý, J.</au><au>Sejkora, J.</au><au>Rosseel, P.</au><au>Dolníček, Z.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ferraioloite from the Sítio do Castelo mine, Folgosinho (Guarda, Portugal), description and Raman spectroscopy</atitle><jtitle>Journal of geosciences (Prague)</jtitle><date>2021-01-01</date><risdate>2021</risdate><volume>66</volume><issue>3</issue><spage>139</spage><epage>146</epage><pages>139-146</pages><issn>1802-6222</issn><eissn>1803-1943</eissn><abstract>A zinc phosphate corresponding to ferraioloite with low Mg and high Na cation contents in interlayer space was identified in samples from the Sitio do Castelo mine, Folgosinho (Guarda, Portugal). It occurs as sky-blue, pearly lustrous, radial or irregular aggregates up to 1 mm in size composed of very thin elongated flaky crystals. The mineral is monoclinic, space group I2/m, with unit-cell parameters refined from X-ray powder diffraction data: a = 25.417(7), b = 6.342(4), c =15.186(5) Å, ß = 90.02(4)°, V = 2448.0(17) Å3. The chemical composition generally agrees with published data for ferraioloite, but differs significantly in elements present at sites assumed to be in the interlayer of the crystal structure. The corresponding empirical formula based on 8 (PO)4 and 4 (OH) groups pfu is (Mg016Na015Ca009K001)E041Mn422(Fe2+j64 Fe3+j15Alj47)E426Zn387(PO4)8(OH)4(H2O)20. The Raman spectra and tentative assignment of observed bands are given. The most prominent bands are attributed to stretching and bending vibrations of phosphate tetrahedra and complex metal-centered polyhedra. Bands of O-H stretching vibrations are weak, and bending vibrations of water molecules were not observed. The origin of the mineral is related to in-situ supergene weathering of zwieselite-triplite and isokite-fluorapatite assemblages with admixtures of sphalerite.</abstract><cop>Prague</cop><pub>Czech Geological Society</pub><doi>10.3190/jgeosci.326</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Admixtures Analytical methods Bending Cations Chemical composition Coordination compounds Crystal structure Crystals Deformation Fluorapatite Heavy metals Interlayers Museums Phosphates Polyhedra Quartz Raman spectra Raman spectroscopy Spectrum analysis Sphalerite Stretching Tetrahedra Unit cell Vibrations Water chemistry X ray powder diffraction Zinc Zinc phosphate Zincblende |
| title | Ferraioloite from the Sítio do Castelo mine, Folgosinho (Guarda, Portugal), description and Raman spectroscopy |
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