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
GUID
(UUID V4):
(UUID V4):
2a9b543e-b34b-4ef0-8623-9ecb096bd4b6
IMA Classification of Ermeloite
Approved, Pending publication
Approval history:
IMA no. 2021-017a
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 IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Erm | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC 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
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 = 0.793 : 1 : 0.94
Unit Cell V:
291.95 Ă
Âł (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.653 Ă | (67) |
4.570 Ă | (33) |
3.275 Ă | (100) |
3.197 Ă | (44) |
2.871 Ă | (25) |
2.471 Ă | (40) |
2.449 Ă | (30)2 |
.052 Ă | (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
Associated Minerals at Type Locality:
Relationship of Ermeloite to other Species
Member of:
Other Members of this 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. | KrupiÄkaite | Cu6[AsO3(OH)]6 · 8H2O |
8.CB.05 | Serrabrancaite | MnPO4 · H2O |
8.CB.10 | Hureaulite | Mn2+5(PO3OH)2(PO4)2 · 4H2O |
8.CB.10 | Villyaellenite | MnMn2Ca2(AsO4)2(HAsO4)2 · 4H2O |
8.CB.10 | UM1997-09-AsO:CaHMgZn | (Mg,Ca,Zn)5(AsO4)2(HAsO4)2 · 4H2O |
8.CB.10 | Nyholmite | Cd3Zn2(AsO4)2(HAsO4)2 · 4H2O |
8.CB.10 | Miguelromeroite | MnMn2Mn2(AsO4)2(HAsO4)2 · 4H2O |
8.CB.10 | Giftgrubeite | CaMn2Ca2(AsO4)2(AsO3OH)2 · 4H2O |
8.CB.15 | Krautite | Mn(HAsO4) · H2O |
8.CB.20 | Cobaltkoritnigite | Co(AsO3OH) · H2O |
8.CB.20 | Koritnigite | Zn(AsO3OH) · H2O |
8.CB.20 | Magnesiokoritnigite | Mg(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.60 | Honzaite | Ni2(AsO3OH)2 · 5H2O |
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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Please feel free to link to this page.
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References for Ermeloite
Localities for Ermeloite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Spain (TL) | |
| Miyawaki et al. (2022) |