RT Journal Article
T1 Ermeloite, AlPO4⋅H2O a new phosphate mineral with kieserite-type structure from Galicia, Spain
A1 Zaragoza Vérez, Guillermo
A1 Rodríguez Vázquez, Carlos J.
A1 Dacuña Mariño, Bruno
A1 Fernández Cereijo, Inés
A1 González del Tánago y del Río, José
A1 Jiménez Martínez, Ramón
A1 Barreiro Pérez, Ramiro
A1 Antón Segurado, Raquel
A1 Vázquez Fernández, Ezequiel
A1 Gómez Dopazo, Montserrat
A1 González Pazos, Aída
A1 Lantes Suárez, Óscar
K1 Ermeloite
K1 Aluminium phosphate
K1 New mineral
K1 Crystal structure
K1 X-ray diffraction
K1 Raman spectroscopy
K1 Electron microprobe analysis
K1 Pegmatite paragenesis
AB Ermeloite is a new aluminium phosphate mineral from Galicia, Spain, in the northwest of the Iberian Peninsula. It is the third formally recognised mineral discovered in Galicia since morenosite and cervantite in the 19th Century. The name and symbol (Erm) were approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (IMA2021–017a) in recognition of the geographical location where it was found. The mineral occurs as a light blue to white fine aggregate over quartz and microcline associated with wardite. Crystals of ~0.04 mm are transparent and have a waxy lustre. The simplified empirical formula determined using electron microprobe analysis is Al1.02P0.95F0.06O3.88⋅1.06 H2O, which is near to the ideal formula Al(PO4)⋅H2O. The mineral is an alteration product within a phosphate pegmatite. Ermeloite is the second phosphate isostructural with the sulfates of the kieserite group. Single-crystal X-ray diffraction showed that ermeloite crystallises in the monoclinic C2/c space group with cell parameters a = 6.5371(4) Å, b = 7.5670(5) Å, c = 7.1146(5) Å, β = 115.335(2)°, V = 318.08(4) Å3 and Z = 4 at room temperature. Comparative analysis of the crystallographic data, with isostructural phosphates, revealed an interesting behaviour for these compounds
PB Cambridge University Press
SN 0026-461X
YR 2024
FD 2024-04-25
LK http://hdl.handle.net/10347/34988
UL http://hdl.handle.net/10347/34988
LA eng
NO Mineralogical Magazine (2024), 1–9
DS Minerva
RD 22 abr 2026