Angelellite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Angelellite
Victorio Angelelli
Formula:
Fe3+4(AsO4)2O3
Colour:
Reddish brown, blackish brown, dark brown
Lustre:
Adamantine
Hardness:
5½
Specific Gravity:
4.867
Crystal System:
Triclinic
Name:
Named by Paul Ramdor, Friedrich Ahlfeld, and Fritz Berndt in 1959 honor of Argentine mineralogist Victorio Angelelli (February 20, 1908 Fabriano, Italy - August 5, 1991 Buenos Aires, Argentina, professor of Economic Geology at Universidad Nacional de La Plata and, later, director of the Argentinian Institute of Mineral Resources.
This page provides mineralogical data about Angelellite.
Unique Identifiers
Mindat ID:
231
Long-form identifier:
mindat:1:1:231:4
GUID
(UUID V4):
(UUID V4):
8da43cb7-2ea1-479b-9782-3f837ffe659b
IMA Classification of Angelellite
Classification of Angelellite
8.BC.05
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
C : With only medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
C : With only medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
41.6.10.1
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq
20.9.1
20 : Arsenates (also arsenates with phosphate, but without other anions)
9 : Arsenates of Fe
20 : Arsenates (also arsenates with phosphate, but without other anions)
9 : Arsenates of Fe
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Agl | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Ang | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Angelellite
Adamantine
Transparency:
Translucent
Colour:
Reddish brown, blackish brown, dark brown
Streak:
Reddish brown
Hardness:
5½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
{001}
{001}
Fracture:
Conchoidal
Density:
4.867 g/cm3 (Measured) 4.862 g/cm3 (Calculated)
Optical Data of Angelellite
Type:
Biaxial (+)
RI values:
nα = 2.130 nβ = 2.200 nγ = 2.400
Birefringence:
0.27
Max Birefringence:
δ = 0.270
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r < v
Pleochroism:
Strong
Comments:
Deep blood red to reddish brown.
Chemistry of Angelellite
Mindat Formula:
Fe3+4(AsO4)2O3
Elements listed:
Crystallography of Angelellite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 5.036(3) Å, b = 6.461 Å, c = 6.594 Å
α = 114.4°, β = 116.4°, γ = 81.9°
α = 114.4°, β = 116.4°, γ = 81.9°
Ratio:
a:b:c = 0.779 : 1 : 1.021
Unit Cell V:
174.77 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Tabular crystals to 1cm
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0014707 | Angelellite | Moore P B, Araki T (1978) Angelellite, Fe4O3(AsO4)2: a novel cubic close-packed oxide structure Neues Jahrbuch fur Mineralogie, Abhandlungen 132 91-100 | 1978 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.29 Å | (30) |
| 3.152 Å | (100) |
| 2.997 Å | (70) |
| 2.960 Å | (40) |
| 2.955 Å | (40) |
| 2.856 Å | (50) |
| 2.489 Å | (50) |
| 2.072 Å | (50) |
Comments:
ICDD 13-121
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 46 : Near-surface hydrothermal alteration of minerals (see also #22) |
Type Occurrence of Angelellite
General Appearance of Type Material:
Dark brown incrustations with a high luster.
Place of Conservation of Type Material:
Institut für Mineralogie und Kristallographie, Technische Universität, Berlin, Germany, number 94/28.
Geological Setting of Type Material:
Fumarole associated with tin mineralization.
Associated Minerals at Type Locality:
Other Language Names for Angelellite
Related Minerals - Strunz-mindat Grouping
| 8.BC. | Elaliite | (Fe2+8Fe3+)(PO4)O8 |
| 8.BC. | Elkinstantonite | Fe4(PO4)2O |
| 8.BC. | Manganrockbridgeite | Mn2+2Fe3+3(PO4)3(OH)4(H2O) |
| 8.BC.10 | Frondelite | Mn2+Fe3+4(PO4)3(OH)5 |
| 8.BC.10 | Rockbridgeite | Fe2+Fe3+4(PO4)3(OH)5 |
| 8.BC.10 | Plimerite | ZnFe3+4(PO4)3(OH)5 |
| 8.BC.10 | Ferrorockbridgeite | (Fe2+,Mn2+)2(Fe3+)3(PO4)3(OH)4(H2O) |
| 8.BC.10 | Ferrirockbridgeite | (Fe3+0.67◻0.33)2(Fe3+)3(PO4)3(OH)4(H2O) |
| 8.BC.15 | Aerugite | Ni8.5(AsO4)2As5+O8 |
Fluorescence of Angelellite
Not fluorescent
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 Angelellite
mindat.org URL:
https://www.mindat.org/min-231.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Angelellite
Reference List:
Localities for Angelellite
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.
Argentina (TL) | |
| Neues Jahrb.Mineral. (1959) +1 other reference |
Bolivia | |
| Torró et al. (2019) |
Canada | |
| Sparkes et al. (2016) |
China | |
| Suiliang Dong et al. (2010) +1 other reference |
Quick NavTopAbout AngelelliteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence Other LanguagesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Veta Yareta Mine, Cerro Pululos, Cusi Cusi, Rinconada Department, Jujuy Province, Argentina