Ermeloite
A valid IMA mineral species
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Formula:
Al(PO4) · H2O
Colour:
light blue to white
Lustre:
Vitreous, Waxy, Pearly
Hardness:
3½ - 4
Specific Gravity:
2.923 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
For the type locality
Type Locality:
Unique Identifiers
Mindat ID:
56152
Long-form identifier:
mindat:1:1:56152:5
IMA Classification of Ermeloite
Classification of Ermeloite
8.CB.05
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Erm | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Ermeloite
Vitreous, Waxy, Pearly
Transparency:
Transparent
Colour:
Light blue to white
Streak:
White
Hardness:
3½ - 4 on Mohs scale
Tenacity:
Brittle
Fracture:
Conchoidal
Density:
2.923 g/cm3 (Calculated)
Chemistry of Ermeloite
Mindat Formula:
Al(PO4) · H2O
Element Weights:
Elements listed:
Crystallography of Ermeloite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 6.5371(4) Å, b = 7.5670(5) Å, c = 7.1146(5) Å
β = 115.335(2)°
β = 115.335(2)°
Ratio:
a:b:c = 0.864 : 1 : 0.94
Unit Cell V:
318.08 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.653 Å | (67) |
| 4.570 Å | (33) |
| 3.275 Å | (100) |
| 3.197 Å | (44) |
| 2.871 Å | (25) |
| 2.471 Å | (40) |
| 2.449 Å | (30)2 |
| .052 Å | (15) |
Type Occurrence of Ermeloite
General Appearance of Type Material:
short-prismatic crystals with a maximum size of 0.05 mm
Place of Conservation of Type Material:
mineralogical collections of the Museo de Historia Natural (MHN), University of Santiago de Compostela, Parque Vista Alegre s/n, 15782 Santiago de Compostela, Spain, catalogue number CM64083
Geological Setting of Type Material:
a pegmatite outcropping in granodiorites of the Morrazo
peninsula
peninsula
Associated Minerals at Type Locality:
Other Language Names for Ermeloite
Relationship of Ermeloite to other Species
Member of:
Other Members of Kieserite Group:
| Cobaltkieserite | CoSO4 · H2O | Mon. 2/m : B2/b |
| Dwornikite | Ni(SO4) · H2O | Mon. 2/m : B2/b |
| Gunningite | ZnSO4 · H2O | Mon. 2/m : B2/b |
| Kieserite | MgSO4 · H2O | Mon. 2/m : B2/b |
| Serrabrancaite | MnPO4 · H2O | Mon. 2/m : B2/b |
| Szmikite | MnSO4 · H2O | Mon. 2/m : B2/b |
| Szomolnokite | FeSO4 · H2O | Mon. 2/m : B2/b |
Related Minerals - Strunz-mindat Grouping
| 8.CB. | Krupičkaite | Cu6[AsO3(OH)]6 · 8H2O |
| 8.CB.X | Honzaite | Ni2(AsO3OH)2 · 5H2O |
| 8.CB.X | Redondite | AlPO4 · 2H2O |
| 8.CB.05 | Serrabrancaite | MnPO4 · H2O |
| 8.CB.10 | Nyholmite | Cd3Zn2(AsO3OH)2(AsO4)2 · 4H2O |
| 8.CB.10 | Villyaellenite | (Mn,Ca)Mn2Ca2(AsO3OH)2(AsO4)2 · 4H2O |
| 8.CB.10 | Giftgrubeite | CaMn2Ca2(AsO4)2(AsO3OH)2 · 4H2O |
| 8.CB.10 | Hureaulite | Mn2+5(PO3OH)2(PO4)2 · 4H2O |
| 8.CB.10 | Miguelromeroite | Mn2+5(AsO3OH)2(AsO4)2(H2O)4 |
| 8.CB.10 | 'UM1997-09-AsO:CaHMgZn' | (Mg,Ca,Zn)5(AsO4)2(HAsO4)2 · 4H2O |
| 8.CB.15 | Krautite | Mn(HAsO4) · H2O |
| 8.CB.20 | Cobaltkoritnigite | Co(AsO3OH) · H2O |
| 8.CB.20 | Magnesiokoritnigite | Mg(AsO3OH) · H2O |
| 8.CB.20 | Koritnigite | Zn(AsO3OH) · H2O |
| 8.CB.25 | Yvonite | Cu(HAsO4) · 2H2O |
| 8.CB.30 | Geminite | Cu2+(AsO3OH) · H2O |
| 8.CB.35 | Schubnelite | Fe3+VO4 · H2O |
| 8.CB.40 | Radovanite | Cu2Fe3+(AsO4)(HAs3+O3)2 · H2O |
| 8.CB.45 | Kazakhstanite | Fe3+5V4+3V5+12O39(OH)9 · 9H2O |
| 8.CB.50 | Kolovratite | NixZny(VO4)0.67(x+y) · nH2O |
| 8.CB.60 | Burgessite | Co2(H2O)4[AsO3(OH)]2(H2O) |
| 8.CB.65 | Cardite | Zn5.5(AsO4)2(AsO3OH)(OH)3 · 3H2O |
Fluorescence of Ermeloite
none
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Ermeloite
mindat.org URL:
https://www.mindat.org/min-56152.html
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References for Ermeloite
Reference List:
Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2022) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 68. European Journal of Mineralogy, 34 (5) 385-391 doi:10.5194/ejm-34-385-2022
Vérez, Guillermo Z., Vázquez, Carlos J. Rodríguez, Mariño, Bruno Dacuña, Cereijo, Inés Fernández, del Tánago, José González, Martínez, Ramón Jiménez, Pérez, Ramiro Barreiro, Segurado, Raquel Antón, Fernández, Ezequiel Vázquez, Dopazo, Montse Gómez, et al. (2024) Ermeloite, AlPO4⋅H2O a new phosphate mineral with kieserite-type structure from Galicia, Spain. Mineralogical Magazine, 88 (4). 412-420 doi:10.1180/mgm.2024.33
Localities for Ermeloite
Showing 1 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Spain (TL) | |
| Miyawaki et al. (2022) +1 other reference |
