Phosphorrösslerite
A valid IMA mineral species - grandfathered
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About Phosphorrösslerite
Formula:
Mg(PO3OH) · 7H2O
Colour:
Colorless, white, pale yellow due to staining; colorless in transmitted light.
Lustre:
Vitreous, Waxy, Dull
Hardness:
2½
Specific Gravity:
1.721 - 1.729
Crystal System:
Monoclinic
Name:
Named by Friedrich Robitsch in 1939 for its chemical relationship to rösslerite, containing PHOSPHORus.
Isostructural with:
Name Encoding
ASCII-7:
Phosphorrosslerite
Unique Identifiers
Mindat ID:
3183
Long-form identifier:
mindat:1:1:3183:3
IMA Classification of Phosphorrösslerite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Mg(PO3OH)(H2O)6·H2O
First published:
1939
Classification of Phosphorrösslerite
8.CE.20
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5
39.1.9.2
39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
1 : A[HXO4]·xH2O
39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
1 : A[HXO4]·xH2O
19.3.18
19 : Phosphates
3 : Phosphates of Be and Mg
19 : Phosphates
3 : Phosphates of Be and Mg
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 |
|---|---|---|
| Prö | 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 Phosphorrösslerite
Vitreous, Waxy, Dull
Transparency:
Translucent
Comment:
Turns dull upon dehydration.
Colour:
Colorless, white, pale yellow due to staining; colorless in transmitted light.
Streak:
White
Hardness:
2½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal, Sub-Conchoidal
Density:
1.721 - 1.729 g/cm3 (Measured) 1.717 g/cm3 (Calculated)
Comment:
1.728 (artificial material). Calculated D ranges 1.68-1.741
Optical Data of Phosphorrösslerite
Type:
Biaxial (-)
RI values:
nα = 1.477 nβ = 1.485 nγ = 1.486
2V:
Measured: 38° , Calculated: 38°
Birefringence:
0.009
Max. Birefringence:
δ = 0.009
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate
Dispersion:
r > v
Optical Extinction:
Z ∧ c = 6.5°; OAP perpendicular {010}.
Pleochroism:
Non-pleochroic
Chemistry of Phosphorrösslerite
Mindat Formula:
Mg(PO3OH) · 7H2O
Element Weights:
Elements listed:
Crystallography of Phosphorrösslerite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/b
Setting:
P2/c
Cell Parameters:
a = 11.61 Å, b = 25.40 Å, c = 6.63 Å
β = 94.77°
β = 94.77°
Ratio:
a:b:c = 0.457 : 1 : 0.261
Unit Cell V:
1,948.38 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Crystals equi-dimentional or short prismatic [100]; also skeletal or crusted. Easily dehydrates to a pseudomorph of newberyite after phosphorrösslerite.
Comment:
ZK 137:246 (1973) structure; also ICDD 19-761 (synthetic)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.55 Å | (90) |
| 4.42 Å | (90) |
| 4.13 Å | (90) |
| 3.29 Å | (100) |
| 2.82 Å | (100) |
| 2.70 Å | (90) |
| 2.63 Å | (90) |
| 1.991 Å | (90) |
Comments:
ICDD 19-761 (synthetic).
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 55 : Anthropogenic mine minerals |
Type Occurrence of Phosphorrösslerite
General Appearance of Type Material:
Crystals equidimensional or short prismatic, rarely tabular; often in twinlike intergrowths. Also skeletal crystals, drusy crusts and kidney or hyalite-like forms.
Place of Conservation of Type Material:
Harvard University, Cambridge, Massachusetts, USA, 107177.
Geological Setting of Type Material:
Post-mine. Found in cold (10° C), wet muck in abandoned mine workings.
Synonyms of Phosphorrösslerite
Other Language Names for Phosphorrösslerite
Dutch:Phosphorrössleriet
German:Phosphorrösslerit
Related Minerals - Strunz-mindat Grouping
| 8.CE. | Monteneroite | Cu2+Mn2+2(AsO4)2 · 8H2O |
| 8.CE. | Belmonteite | CaMn2(AsO4)2 · 7H2O |
| 8.CE.X | Babánekite | Cu3(AsO4)2 · 8H2O |
| 8.CE.05 | Chudobaite | Mg5(AsO4)2(AsO3OH)2 · 10H2O |
| 8.CE.05 | Geigerite | Mn2+5(AsO4)2(HAsO4)2 · 10H2O |
| 8.CE.10 | Newberyite | Mg(PO3OH) · 3H2O |
| 8.CE.10 | Manganonewberyite | Mn(PO3OH)(H2O)3 |
| 8.CE.15 | Fanguangite | (MoO2)(PO3OH) · 4H2O |
| 8.CE.15 | Brassite | Mg(HAsO4) · 4H2O |
| 8.CE.20 | Rösslerite | Mg(HAsO4) · 7H2O |
| 8.CE.25 | Switzerite | Mn2+3(PO4)2 · 7H2O |
| 8.CE.25 | Metaswitzerite | Mn2+3(PO4)2 · 4H2O |
| 8.CE.30 | Pradetite | CoCu4(AsO4)2(HAsO4)2 · 9H2O |
| 8.CE.30 | Veselovskýite | ZnCu4(AsO4)2(HAsO4)2 · 9H2O |
| 8.CE.30 | Lindackerite | CuCu4(AsO4)2(HAsO4)2 · 9H2O |
| 8.CE.30 | Klajite | MnCu4(AsO4)2(HAsO4)2 · 9-10H2O |
| 8.CE.30 | Hloušekite | (Ni,Co)Cu4(AsO4)2(AsO3OH)2 · 9H2O |
| 8.CE.30 | Ondrušite | CaCu4(AsO4)2(HAsO4)2 · 10H2O |
| 8.CE.35 | Bobierrite | Mg3(PO4)2 · 8H2O |
| 8.CE.40 | Barićite | (Mg,Fe)3(PO4)2 · 8H2O |
| 8.CE.40 | Parasymplesite | Fe2+3(AsO4)2 · 8H2O |
| 8.CE.40 | Gritsenkoite | CoMg2(AsO4)2(H2O)8 |
| 8.CE.40 | Cabrerite | NiMg2(AsO4)2 · 8H2O |
| 8.CE.40 | Pakhomovskyite | Co3(PO4)2 · 8H2O |
| 8.CE.40 | Vivianite | Fe2+Fe2+2(PO4)2 · 8H2O |
| 8.CE.40 | Arupite | Ni3(PO4)2 · 8H2O |
| 8.CE.40 | Erythrite | Co3(AsO4)2 · 8H2O |
| 8.CE.40 | Hörnesite | Mg3(AsO4)2 · 8H2O |
| 8.CE.40 | Manganohörnesite | Mn2+3(AsO4)2 · 8H2O |
| 8.CE.40 | Köttigite | Zn3(AsO4)2 · 8H2O |
| 8.CE.40 | Ferrisymplesite | Fe3+3(AsO4)2(OH)3 · 5H2O |
| 8.CE.40 | Annabergite | Ni3(AsO4)2 · 8H2O |
| 8.CE.45 | Symplesite | Fe2+3(AsO4)2 · 8H2O |
| 8.CE.50 | Cattiite | Mg3(PO4)2 · 22H2O |
| 8.CE.55 | Koninckite | Fe3+PO4 · 3H2O |
| 8.CE.60 | Kaňkite | FeAsO4 · 3.5H2O |
| 8.CE.60 | Hilarionite | Fe3+2(SO4)(AsO4)(OH) · 6H2O |
| 8.CE.65 | Steigerite | Al(VO4) · 3H2O |
| 8.CE.70 | Metaschoderite | Al2(PO4)(VO4) · 6H2O |
| 8.CE.70 | Schoderite | Al2(PO4)(VO4) · 8H2O |
| 8.CE.75 | Zigrasite | MgZr(PO4)2 · 4H2O |
| 8.CE.75 | 'UM2009-11-PO:CaHZr' | CaZr[PO4]2 · 4H2O |
| 8.CE.75 | Malhmoodite | FeZr(PO4)2 · 4H2O |
| 8.CE.80 | Santabarbaraite | Fe3+3(PO4)2(OH)3 · 5H2O |
| 8.CE.85 | Metaköttigite | (Zn,Fe,Fe)3(AsO4)2 · 8(H2O,OH) |
| 8.CE.90 | Slavkovite | Cu13(AsO4)6(AsO3OH)4 · 23H2O |
Fluorescence of Phosphorrösslerite
Not fluorescent
Other Information
Notes:
Easily soluble in dilute HCl or HNO3. Readily attacked by water.
In closed tube readily yields much water and turns white. Upon long exposure to air gradually turns white.
B.B. on platinum wire, gives no flame and leaves a mass very difficultly soluble in dilute HCl.
In closed tube readily yields much water and turns white. Upon long exposure to air gradually turns white.
B.B. on platinum wire, gives no flame and leaves a mass very difficultly soluble in dilute HCl.
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 Phosphorrösslerite
mindat.org URL:
https://www.mindat.org/min-3183.html
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References for Phosphorrösslerite
Localities for Phosphorrösslerite
Showing 4 localities.
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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.
Austria (TL) | |
| Palache et al. (1951) +1 other reference |
| Exel (1993) |
| Laskovic et al. (1967) | |
USA | |
| Northrop et al. (1996) |
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Raton, Colfax County, New Mexico, USA