Batoniite, (Al8(OH)14(H2O)18)(SO4)5  ⋅  5H2O, a new mineral with the (Al8(OH)14(H2O)18)10+ polyoxocation from the Cetine di Cotorniano Mine, Tuscany, Italy

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Abstract 8 (OH) 14 (H2 O) 18 ](SO4) 5 ⋅ 2 O, was discovered in the Cetine di Cotorniano Mine, Chiusdino, Siena, Tuscany, Italy. It occurs as hemispherical aggregates composed of brittle tabular crystals, up to 1 mm in size, white to colorless in color, with a white streak and a vitreous to greasy luster. Batoniite is biaxial negative, with α =  1.4833 (6), β =  1.4948 (6), γ =  1.5019 (5) (589 nm), and 2V (meas. ) =  71 (1)∘. Electron microprobe analysis, affected by the dehydration of batoniite under the chamber vacuum, gave (in wt %) the following: Al2 O3 33.48, Fe2 O3 0.05, SO3 33.00, and H2 Ocalc 44.41, total 110.94. It corresponds to the chemical formula (Al7.98 Fe0.01 3 +) Σ 7.99 (SO4) 5.01 13.95 (H2 O) 18  ⋅ 2 O. Batoniite is triclinic, belonging to space group P 1 ‾ a =  9.1757 (6), b =  12.0886 (9), c =  20.9218 (15) Å, α =  82.901 (3), β =  87.334 (3), γ =  86.999 (2)∘, V =  2297.8 (3) Å3, and Z =  2. The crystal structure was refined to R 1 =  0.0916 for 8118 unique reflections with F o > 4 σ (F o) and 811 refined parameters and 60 restraints. Batoniite is characterized by isolated [Al8 (OH) 14 (H2 O) 18 ]10 + 4) 2 - 2 O groups. In type material, it is associated with gypsum and a poorly crystallized Al–Fe sulfate. The crystallization of batoniite is probably due to the action of H2 SO4 on Al-bearing rocks of Paleozoic age cropping out in the Garibaldi Tunnel, the lowest mining level of the Cetine di Cotorniano Mine.

Location: Deutsche Nationalbibliothek Frankfurt am Main

Extent: Online-Ressource

Language: Englisch

Bibliographic citation: Batoniite, (Al₈(OH)₁₄(H₂O)₁₈)(SO₄)₅ ⋅ 5H₂O, a new mineral with the (Al₈(OH)₁₄(H₂O)₁₈)¹⁰⁺ polyoxocation from the Cetine di Cotorniano Mine, Tuscany, Italy ; volume:35 ; number:5 ; year:2023 ; pages:703-714 ; extent:12
European journal of mineralogy ; 35, Heft 5 (2023), 703-714 (gesamt 12)

Creator: Mauro, Daniela
Biagioni, Cristian
Sejkora, Jiří
Dolníček, Zdeněk
Škoda, Radek

DOI: 10.5194/ejm-35-703-2023

URN: urn:nbn:de:101:1-2023090704554393619583

Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.

Last update: 14.08.2025, 10:45 AM CEST

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Associated

Mauro, Daniela
Biagioni, Cristian
Sejkora, Jiří
Dolníček, Zdeněk
Škoda, Radek

Other Objects (12)

Pleysteinite, ((H2O)0.5K0.5)2Mn2Al3(PO4)4F2(H2O)10  ⋅  4H2O, the Al analogue of benyacarite, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany

Pleysteinite, ((H2O)0.5K0.5)2Mn2Al3(PO4)4F2(H2O)10  ⋅  4H2O, the Al analogue of benyacarite, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany

Zinkgruvanite, Ba4Mn2+4Fe3+2(Si2O7)2(SO4)2O2(OH)2, a new ericssonite-group mineral from the Zinkgruvan Zn-Pb-Ag-Cu deposit, Askersund, Örebro County, Sweden

Zinkgruvanite, Ba4Mn2+4Fe3+2(Si2O7)2(SO4)2O2(OH)2, a new ericssonite-group mineral from the Zinkgruvan Zn-Pb-Ag-Cu deposit, Askersund, Örebro County, Sweden

Regerite, KFe6(PO4)4(OH)7(H2O)6  ⋅  4H2O, the first new mineral species from the Kreuzberg pegmatite, Pleystein, Oberpfalz, Bavaria, Germany

Regerite, KFe6(PO4)4(OH)7(H2O)6  ⋅  4H2O, the first new mineral species from the Kreuzberg pegmatite, Pleystein, Oberpfalz, Bavaria, Germany

Manganrockbridgeite, Mn2+2Fe3+3(PO4)3(OH)4(H2O), a new member of the rockbridgeite group, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria

Manganrockbridgeite, Mn2+2Fe3+3(PO4)3(OH)4(H2O), a new member of the rockbridgeite group, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria

Dacostaite, K (Mg2Al)(Mg (H2O)6)2(AsO4)2F6  ⋅  2H2O, a new fluoride–arsenate mineral from the Cetine di Cotorniano Mine (Tuscany, Italy)

Dacostaite, K (Mg2Al)(Mg (H2O)6)2(AsO4)2F6  ⋅  2H2O, a new fluoride–arsenate mineral from the Cetine di Cotorniano Mine (Tuscany, Italy)

Hochleitnerite, (K (H2O)) Mn2(Ti2Fe)(PO4)4O2(H2O)10  ⋅  4H2O, a new paulkerrite-group mineral, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany

Hochleitnerite, (K (H2O)) Mn2(Ti2Fe)(PO4)4O2(H2O)10  ⋅  4H2O, a new paulkerrite-group mineral, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany

Redefinition of angastonite, CaMgAl2(PO4)2(OH)4 ⋅ 7H2O, as an amorphous mineral

Redefinition of angastonite, CaMgAl2(PO4)2(OH)4 ⋅ 7H2O, as an amorphous mineral

Ferro-ferri-holmquistite, □Li2(Fe2+3Fe3+2) Si8O22(OH)2, Fe2+Fe3+ analogue of holmquistite, from the Iwagi islet, Ehime, Japan

Ferro-ferri-holmquistite, <italic>□</italic>Li2(Fe2+3Fe3+2) Si8O22(OH)2, Fe2+Fe3+ analogue of holmquistite, from the Iwagi islet, Ehime, Japan

Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe (CO3)6  ⋅  3H2O, a new species

Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe (CO3)6  ⋅  3H2O, a new species

Redefinition of beraunite, Fe3+6(PO4)4O (OH)4  ⋅  6H2O, and discreditation of the name eleonorite: a re-investigation of type material from the Hrbek Mine (Czech Republic)

Redefinition of beraunite, Fe3+6(PO4)4O (OH)4  ⋅  6H2O, and discreditation of the name eleonorite: a re-investigation of type material from the Hrbek Mine (Czech Republic)

Surfactant-Encapsulated Clusters (SECs): (DODA)20(NH4)[H3Mo57V6(NO)6O183(H2O)18], a Case Study

Surfactant-Encapsulated Clusters (SECs): (DODA)20(NH4)[H3Mo57V6(NO)6O183(H2O)18], a Case Study

Rotherkopfite, KNa2(Fe2+2.5Ti4+1.5) Fe2+(Si4O12)2, a new neptunite-group mineral without essential lithium, from Rother Kopf, Eifel volcanic fields, Germany

Rotherkopfite, KNa2(Fe2+2.5Ti4+1.5) Fe2+(Si4O12)2, a new neptunite-group mineral without essential lithium, from Rother Kopf, Eifel volcanic fields, Germany

Pleysteinite, ((H2O)0.5K0.5)2Mn2Al3(PO4)4F2(H2O)10  ⋅  4H2O, the Al analogue of benyacarite, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany

Zinkgruvanite, Ba4Mn2+4Fe3+2(Si2O7)2(SO4)2O2(OH)2, a new ericssonite-group mineral from the Zinkgruvan Zn-Pb-Ag-Cu deposit, Askersund, Örebro County, Sweden

Regerite, KFe6(PO4)4(OH)7(H2O)6  ⋅  4H2O, the first new mineral species from the Kreuzberg pegmatite, Pleystein, Oberpfalz, Bavaria, Germany

Manganrockbridgeite, Mn2+2Fe3+3(PO4)3(OH)4(H2O), a new member of the rockbridgeite group, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria

Dacostaite, K (Mg2Al)(Mg (H2O)6)2(AsO4)2F6  ⋅  2H2O, a new fluoride–arsenate mineral from the Cetine di Cotorniano Mine (Tuscany, Italy)

Hochleitnerite, (K (H2O)) Mn2(Ti2Fe)(PO4)4O2(H2O)10  ⋅  4H2O, a new paulkerrite-group mineral, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany

Redefinition of angastonite, CaMgAl2(PO4)2(OH)4 ⋅ 7H2O, as an amorphous mineral

Ferro-ferri-holmquistite, <italic>□</italic>Li2(Fe2+3Fe3+2) Si8O22(OH)2, Fe2+Fe3+ analogue of holmquistite, from the Iwagi islet, Ehime, Japan

Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe (CO3)6  ⋅  3H2O, a new species

Redefinition of beraunite, Fe3+6(PO4)4O (OH)4  ⋅  6H2O, and discreditation of the name eleonorite: a re-investigation of type material from the Hrbek Mine (Czech Republic)

Surfactant-Encapsulated Clusters (SECs): (DODA)20(NH4)[H3Mo57V6(NO)6O183(H2O)18], a Case Study

Rotherkopfite, KNa2(Fe2+2.5Ti4+1.5) Fe2+(Si4O12)2, a new neptunite-group mineral without essential lithium, from Rother Kopf, Eifel volcanic fields, Germany

Pleysteinite, ((H2O)0.5K0.5)2Mn2Al3(PO4)4F2(H2O)10  ⋅  4H2O, the Al analogue of benyacarite, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany

Zinkgruvanite, Ba4Mn2+4Fe3+2(Si2O7)2(SO4)2O2(OH)2, a new ericssonite-group mineral from the Zinkgruvan Zn-Pb-Ag-Cu deposit, Askersund, Örebro County, Sweden

Regerite, KFe6(PO4)4(OH)7(H2O)6  ⋅  4H2O, the first new mineral species from the Kreuzberg pegmatite, Pleystein, Oberpfalz, Bavaria, Germany

Manganrockbridgeite, Mn2+2Fe3+3(PO4)3(OH)4(H2O), a new member of the rockbridgeite group, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria

Dacostaite, K (Mg2Al)(Mg (H2O)6)2(AsO4)2F6  ⋅  2H2O, a new fluoride–arsenate mineral from the Cetine di Cotorniano Mine (Tuscany, Italy)

Hochleitnerite, (K (H2O)) Mn2(Ti2Fe)(PO4)4O2(H2O)10  ⋅  4H2O, a new paulkerrite-group mineral, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany

Redefinition of angastonite, CaMgAl2(PO4)2(OH)4 ⋅ 7H2O, as an amorphous mineral

Ferro-ferri-holmquistite, <italic>□</italic>Li2(Fe2+3Fe3+2) Si8O22(OH)2, Fe2+Fe3+ analogue of holmquistite, from the Iwagi islet, Ehime, Japan

Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe (CO3)6  ⋅  3H2O, a new species

Redefinition of beraunite, Fe3+6(PO4)4O (OH)4  ⋅  6H2O, and discreditation of the name eleonorite: a re-investigation of type material from the Hrbek Mine (Czech Republic)

Surfactant-Encapsulated Clusters (SECs): (DODA)20(NH4)[H3Mo57V6(NO)6O183(H2O)18], a Case Study

Rotherkopfite, KNa2(Fe2+2.5Ti4+1.5) Fe2+(Si4O12)2, a new neptunite-group mineral without essential lithium, from Rother Kopf, Eifel volcanic fields, Germany

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Other Objects (12)

Zinkgruvanite, Ba<sub>4</sub>Mn<sup>2+</sup><sub>4</sub>Fe<sup>3+</sup><sub>2</sub>(Si<sub>2</sub>O<sub>7</sub>)<sub>2</sub>(SO<sub>4</sub>)<sub>2</sub>O<sub>2</sub>(OH)<sub>2</sub>, a new ericssonite-group mineral from the Zinkgruvan Zn-Pb-Ag-Cu deposit, Askersund, Örebro County, Sweden

Regerite, KFe<sub>6</sub>(PO<sub>4</sub>)<sub>4</sub>(OH)<sub>7</sub>(H<sub>2</sub>O)<sub>6</sub>&thinsp; ⋅ &thinsp;4H<sub>2</sub>O, the first new mineral species from the Kreuzberg pegmatite, Pleystein, Oberpfalz, Bavaria, Germany

Manganrockbridgeite, Mn<sup>2+</sup><sub>2</sub>Fe<sup>3+</sup><sub>3</sub>(PO<sub>4</sub>)<sub>3</sub>(OH)<sub>4</sub>(H<sub>2</sub>O), a new member of the rockbridgeite group, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria

Dacostaite, K (Mg<sub>2</sub>Al)(Mg (H<sub>2</sub>O)<sub>6</sub>)<sub>2</sub>(AsO<sub>4</sub>)<sub>2</sub>F<sub>6</sub>&thinsp; ⋅ &thinsp;2H<sub>2</sub>O, a new fluoride–arsenate mineral from the Cetine di Cotorniano Mine (Tuscany, Italy)

Hochleitnerite, (K (H<sub>2</sub>O)) Mn<sub>2</sub>(Ti<sub>2</sub>Fe)(PO<sub>4</sub>)<sub>4</sub>O<sub>2</sub>(H<sub>2</sub>O)<sub>10</sub>&thinsp; ⋅ &thinsp;4H<sub>2</sub>O, a new paulkerrite-group mineral, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany

Redefinition of angastonite, CaMgAl<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>(OH)<sub>4</sub> ⋅ 7H<sub>2</sub>O, as an amorphous mineral

Ferro-ferri-holmquistite, <italic>□</italic>Li<sub>2</sub>(Fe<sup>2+</sup><sub>3</sub>Fe<sup>3+</sup><sub>2</sub>) Si<sub>8</sub>O<sub>22</sub>(OH)<sub>2</sub>, Fe<sup>2+</sup>Fe<sup>3+</sup> analogue of holmquistite, from the Iwagi islet, Ehime, Japan

Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na<sub>2</sub>Sr<sub>2</sub>YCe (CO<sub>3</sub>)<sub>6</sub>&thinsp; ⋅ &thinsp;3H<sub>2</sub>O, a new species

Redefinition of beraunite, Fe<sup>3+</sup><sub>6</sub>(PO<sub>4</sub>)<sub>4</sub>O (OH)<sub>4</sub>&thinsp; ⋅ &thinsp;6H<sub>2</sub>O, and discreditation of the name eleonorite: a re-investigation of type material from the Hrbek Mine (Czech Republic)

Surfactant-Encapsulated Clusters (SECs): (DODA)<sub>20</sub>(NH<sub>4</sub>)[H<sub>3</sub>Mo<sub>57</sub>V<sub>6</sub>(NO)<sub>6</sub>O<sub>183</sub>(H<sub>2</sub>O)<sub>18</sub>], a Case Study

Rotherkopfite, KNa<sub>2</sub>(Fe<sup>2+</sup><sub>2.5</sub>Ti<sup>4+</sup><sub>1.5</sub>) Fe<sup>2+</sup>(Si<sub>4</sub>O<sub>12</sub>)<sub>2</sub>, a new neptunite-group mineral without essential lithium, from Rother Kopf, Eifel volcanic fields, Germany

Zinkgruvanite, Ba<sub>4</sub>Mn<sup>2+</sup><sub>4</sub>Fe<sup>3+</sup><sub>2</sub>(Si<sub>2</sub>O<sub>7</sub>)<sub>2</sub>(SO<sub>4</sub>)<sub>2</sub>O<sub>2</sub>(OH)<sub>2</sub>, a new ericssonite-group mineral from the Zinkgruvan Zn-Pb-Ag-Cu deposit, Askersund, Örebro County, Sweden

Regerite, KFe<sub>6</sub>(PO<sub>4</sub>)<sub>4</sub>(OH)<sub>7</sub>(H<sub>2</sub>O)<sub>6</sub>&thinsp; ⋅ &thinsp;4H<sub>2</sub>O, the first new mineral species from the Kreuzberg pegmatite, Pleystein, Oberpfalz, Bavaria, Germany

Manganrockbridgeite, Mn<sup>2+</sup><sub>2</sub>Fe<sup>3+</sup><sub>3</sub>(PO<sub>4</sub>)<sub>3</sub>(OH)<sub>4</sub>(H<sub>2</sub>O), a new member of the rockbridgeite group, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria

Dacostaite, K (Mg<sub>2</sub>Al)(Mg (H<sub>2</sub>O)<sub>6</sub>)<sub>2</sub>(AsO<sub>4</sub>)<sub>2</sub>F<sub>6</sub>&thinsp; ⋅ &thinsp;2H<sub>2</sub>O, a new fluoride–arsenate mineral from the Cetine di Cotorniano Mine (Tuscany, Italy)

Hochleitnerite, (K (H<sub>2</sub>O)) Mn<sub>2</sub>(Ti<sub>2</sub>Fe)(PO<sub>4</sub>)<sub>4</sub>O<sub>2</sub>(H<sub>2</sub>O)<sub>10</sub>&thinsp; ⋅ &thinsp;4H<sub>2</sub>O, a new paulkerrite-group mineral, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany

Redefinition of angastonite, CaMgAl<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>(OH)<sub>4</sub> ⋅ 7H<sub>2</sub>O, as an amorphous mineral

Ferro-ferri-holmquistite, <italic>□</italic>Li<sub>2</sub>(Fe<sup>2+</sup><sub>3</sub>Fe<sup>3+</sup><sub>2</sub>) Si<sub>8</sub>O<sub>22</sub>(OH)<sub>2</sub>, Fe<sup>2+</sup>Fe<sup>3+</sup> analogue of holmquistite, from the Iwagi islet, Ehime, Japan

Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na<sub>2</sub>Sr<sub>2</sub>YCe (CO<sub>3</sub>)<sub>6</sub>&thinsp; ⋅ &thinsp;3H<sub>2</sub>O, a new species

Redefinition of beraunite, Fe<sup>3+</sup><sub>6</sub>(PO<sub>4</sub>)<sub>4</sub>O (OH)<sub>4</sub>&thinsp; ⋅ &thinsp;6H<sub>2</sub>O, and discreditation of the name eleonorite: a re-investigation of type material from the Hrbek Mine (Czech Republic)

Surfactant-Encapsulated Clusters (SECs): (DODA)<sub>20</sub>(NH<sub>4</sub>)[H<sub>3</sub>Mo<sub>57</sub>V<sub>6</sub>(NO)<sub>6</sub>O<sub>183</sub>(H<sub>2</sub>O)<sub>18</sub>], a Case Study

Rotherkopfite, KNa<sub>2</sub>(Fe<sup>2+</sup><sub>2.5</sub>Ti<sup>4+</sup><sub>1.5</sub>) Fe<sup>2+</sup>(Si<sub>4</sub>O<sub>12</sub>)<sub>2</sub>, a new neptunite-group mineral without essential lithium, from Rother Kopf, Eifel volcanic fields, Germany

Zinkgruvanite, Ba<sub>4</sub>Mn<sup>2+</sup><sub>4</sub>Fe<sup>3+</sup><sub>2</sub>(Si<sub>2</sub>O<sub>7</sub>)<sub>2</sub>(SO<sub>4</sub>)<sub>2</sub>O<sub>2</sub>(OH)<sub>2</sub>, a new ericssonite-group mineral from the Zinkgruvan Zn-Pb-Ag-Cu deposit, Askersund, Örebro County, Sweden

Regerite, KFe<sub>6</sub>(PO<sub>4</sub>)<sub>4</sub>(OH)<sub>7</sub>(H<sub>2</sub>O)<sub>6</sub>&thinsp; ⋅ &thinsp;4H<sub>2</sub>O, the first new mineral species from the Kreuzberg pegmatite, Pleystein, Oberpfalz, Bavaria, Germany

Manganrockbridgeite, Mn<sup>2+</sup><sub>2</sub>Fe<sup>3+</sup><sub>3</sub>(PO<sub>4</sub>)<sub>3</sub>(OH)<sub>4</sub>(H<sub>2</sub>O), a new member of the rockbridgeite group, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria

Dacostaite, K (Mg<sub>2</sub>Al)(Mg (H<sub>2</sub>O)<sub>6</sub>)<sub>2</sub>(AsO<sub>4</sub>)<sub>2</sub>F<sub>6</sub>&thinsp; ⋅ &thinsp;2H<sub>2</sub>O, a new fluoride–arsenate mineral from the Cetine di Cotorniano Mine (Tuscany, Italy)

Hochleitnerite, (K (H<sub>2</sub>O)) Mn<sub>2</sub>(Ti<sub>2</sub>Fe)(PO<sub>4</sub>)<sub>4</sub>O<sub>2</sub>(H<sub>2</sub>O)<sub>10</sub>&thinsp; ⋅ &thinsp;4H<sub>2</sub>O, a new paulkerrite-group mineral, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany

Redefinition of angastonite, CaMgAl<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>(OH)<sub>4</sub> ⋅ 7H<sub>2</sub>O, as an amorphous mineral

Ferro-ferri-holmquistite, <italic>□</italic>Li<sub>2</sub>(Fe<sup>2+</sup><sub>3</sub>Fe<sup>3+</sup><sub>2</sub>) Si<sub>8</sub>O<sub>22</sub>(OH)<sub>2</sub>, Fe<sup>2+</sup>Fe<sup>3+</sup> analogue of holmquistite, from the Iwagi islet, Ehime, Japan

Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na<sub>2</sub>Sr<sub>2</sub>YCe (CO<sub>3</sub>)<sub>6</sub>&thinsp; ⋅ &thinsp;3H<sub>2</sub>O, a new species

Redefinition of beraunite, Fe<sup>3+</sup><sub>6</sub>(PO<sub>4</sub>)<sub>4</sub>O (OH)<sub>4</sub>&thinsp; ⋅ &thinsp;6H<sub>2</sub>O, and discreditation of the name eleonorite: a re-investigation of type material from the Hrbek Mine (Czech Republic)

Surfactant-Encapsulated Clusters (SECs): (DODA)<sub>20</sub>(NH<sub>4</sub>)[H<sub>3</sub>Mo<sub>57</sub>V<sub>6</sub>(NO)<sub>6</sub>O<sub>183</sub>(H<sub>2</sub>O)<sub>18</sub>], a Case Study

Rotherkopfite, KNa<sub>2</sub>(Fe<sup>2+</sup><sub>2.5</sub>Ti<sup>4+</sup><sub>1.5</sub>) Fe<sup>2+</sup>(Si<sub>4</sub>O<sub>12</sub>)<sub>2</sub>, a new neptunite-group mineral without essential lithium, from Rother Kopf, Eifel volcanic fields, Germany

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Regerite, KFe<sub>6</sub>(PO<sub>4</sub>)<sub>4</sub>(OH)<sub>7</sub>(H<sub>2</sub>O)<sub>6</sub> ⋅ 4H<sub>2</sub>O, the first new mineral species from the Kreuzberg pegmatite, Pleystein, Oberpfalz, Bavaria, Germany

Dacostaite, K (Mg<sub>2</sub>Al)(Mg (H<sub>2</sub>O)<sub>6</sub>)<sub>2</sub>(AsO<sub>4</sub>)<sub>2</sub>F<sub>6</sub> ⋅ 2H<sub>2</sub>O, a new fluoride–arsenate mineral from the Cetine di Cotorniano Mine (Tuscany, Italy)

Hochleitnerite, (K (H<sub>2</sub>O)) Mn<sub>2</sub>(Ti<sub>2</sub>Fe)(PO<sub>4</sub>)<sub>4</sub>O<sub>2</sub>(H<sub>2</sub>O)<sub>10</sub> ⋅ 4H<sub>2</sub>O, a new paulkerrite-group mineral, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany

Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na<sub>2</sub>Sr<sub>2</sub>YCe (CO<sub>3</sub>)<sub>6</sub> ⋅ 3H<sub>2</sub>O, a new species

Redefinition of beraunite, Fe<sup>3+</sup><sub>6</sub>(PO<sub>4</sub>)<sub>4</sub>O (OH)<sub>4</sub> ⋅ 6H<sub>2</sub>O, and discreditation of the name eleonorite: a re-investigation of type material from the Hrbek Mine (Czech Republic)

Regerite, KFe<sub>6</sub>(PO<sub>4</sub>)<sub>4</sub>(OH)<sub>7</sub>(H<sub>2</sub>O)<sub>6</sub> ⋅ 4H<sub>2</sub>O, the first new mineral species from the Kreuzberg pegmatite, Pleystein, Oberpfalz, Bavaria, Germany

Dacostaite, K (Mg<sub>2</sub>Al)(Mg (H<sub>2</sub>O)<sub>6</sub>)<sub>2</sub>(AsO<sub>4</sub>)<sub>2</sub>F<sub>6</sub> ⋅ 2H<sub>2</sub>O, a new fluoride–arsenate mineral from the Cetine di Cotorniano Mine (Tuscany, Italy)

Hochleitnerite, (K (H<sub>2</sub>O)) Mn<sub>2</sub>(Ti<sub>2</sub>Fe)(PO<sub>4</sub>)<sub>4</sub>O<sub>2</sub>(H<sub>2</sub>O)<sub>10</sub> ⋅ 4H<sub>2</sub>O, a new paulkerrite-group mineral, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany

Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na<sub>2</sub>Sr<sub>2</sub>YCe (CO<sub>3</sub>)<sub>6</sub> ⋅ 3H<sub>2</sub>O, a new species

Redefinition of beraunite, Fe<sup>3+</sup><sub>6</sub>(PO<sub>4</sub>)<sub>4</sub>O (OH)<sub>4</sub> ⋅ 6H<sub>2</sub>O, and discreditation of the name eleonorite: a re-investigation of type material from the Hrbek Mine (Czech Republic)

Regerite, KFe<sub>6</sub>(PO<sub>4</sub>)<sub>4</sub>(OH)<sub>7</sub>(H<sub>2</sub>O)<sub>6</sub> ⋅ 4H<sub>2</sub>O, the first new mineral species from the Kreuzberg pegmatite, Pleystein, Oberpfalz, Bavaria, Germany

Dacostaite, K (Mg<sub>2</sub>Al)(Mg (H<sub>2</sub>O)<sub>6</sub>)<sub>2</sub>(AsO<sub>4</sub>)<sub>2</sub>F<sub>6</sub> ⋅ 2H<sub>2</sub>O, a new fluoride–arsenate mineral from the Cetine di Cotorniano Mine (Tuscany, Italy)

Hochleitnerite, (K (H<sub>2</sub>O)) Mn<sub>2</sub>(Ti<sub>2</sub>Fe)(PO<sub>4</sub>)<sub>4</sub>O<sub>2</sub>(H<sub>2</sub>O)<sub>10</sub> ⋅ 4H<sub>2</sub>O, a new paulkerrite-group mineral, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany

Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na<sub>2</sub>Sr<sub>2</sub>YCe (CO<sub>3</sub>)<sub>6</sub> ⋅ 3H<sub>2</sub>O, a new species

Redefinition of beraunite, Fe<sup>3+</sup><sub>6</sub>(PO<sub>4</sub>)<sub>4</sub>O (OH)<sub>4</sub> ⋅ 6H<sub>2</sub>O, and discreditation of the name eleonorite: a re-investigation of type material from the Hrbek Mine (Czech Republic)