Hylbrownite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
Henry Yorke Lyell Brown
Formula:
Na3Mg(P3O10) · 12H2O
Colour:
Colourless to white
Lustre:
Vitreous
Specific Gravity:
1.81
Crystal System:
Monoclinic
Name:
After Henry Yorke Lyell Brown (23 August 1843 – 22 January 1928), Government Geologist of South Australia (1882 to 1912), to honor his first observations of the interior of the South Australia and Northern Territory states; this has given rise to the first geological map of the whole colony in 1899.
The Mg analogue of kanonerovite. Second natural (mineral) triphosphate. Chemically related to apexite, bakhchisaraitsevite, and mejillonesite.
The structure is based on (1) [Mg(H2O)3P3O10] clusters, sharing face and corners with Na polyhedra in the b direction, and (2) hexa- and heptacoordinated Na polyhedra that form Na2O9 dimers, corner sharing to give chains along b. The (1) and (2) elements are connected in the c direction to give thick sheets || (100); hydrogen bonds link the sheets in the a direction.
The structure is based on (1) [Mg(H2O)3P3O10] clusters, sharing face and corners with Na polyhedra in the b direction, and (2) hexa- and heptacoordinated Na polyhedra that form Na2O9 dimers, corner sharing to give chains along b. The (1) and (2) elements are connected in the c direction to give thick sheets || (100); hydrogen bonds link the sheets in the a direction.
Unique Identifiers
Mindat ID:
41135
Long-form identifier:
mindat:1:1:41135:4
GUID
(UUID V4):
(UUID V4):
3757ca87-b5ac-46b6-ad85-f8a7258e777f
IMA Classification of Hylbrownite
Classification of Hylbrownite
8.FC.X
8 : PHOSPHATES, ARSENATES, VANADATES
F : Polyphosphates, Polyarsenates, [4]-Polyvanadates
C : Polyphosphates, etc., with H2O only
8 : PHOSPHATES, ARSENATES, VANADATES
F : Polyphosphates, Polyarsenates, [4]-Polyvanadates
C : Polyphosphates, etc., with H2O only
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 |
|---|---|---|
| Hbw | 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 Hylbrownite
Vitreous
Transparency:
Transparent
Colour:
Colourless to white
Streak:
White
Comment:
not determined
Tenacity:
Brittle
Cleavage:
Distinct/Good
parallel to {001} and to {100}
parallel to {001} and to {100}
Fracture:
Irregular/Uneven
Density:
1.81(4) g/cm3 (Measured) 1.82 g/cm3 (Calculated)
Optical Data of Hylbrownite
Type:
Biaxial (-)
RI values:
nα = 1.390(4) nβ = 1.421(4) nγ = 1.446(4)
2V:
Calculated: 82.2°
Max Birefringence:
δ = 0.056
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:
Moderate
Pleochroism:
Non-pleochroic
Chemistry of Hylbrownite
Mindat Formula:
Na3Mg(P3O10) · 12H2O
Common Impurities:
Ca
Crystallography of Hylbrownite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 14.722(3) Å, b = 9.240(2) Å, c = 15.052(3) Å
β = 90.01(3)°
β = 90.01(3)°
Ratio:
a:b:c = 1.593 : 1 : 1.629
Unit Cell V:
2047.5 ų
Z:
4
Morphology:
Thin prismatic to acicular. Observed forms include {010}, {100}, {001}, {210}, {201}.
Comment:
Space group P21/n.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.530 Å | (60) |
| 7.357 Å | (80) |
| 6.949 Å | (100) |
| 5.835 Å | (30) |
| 4.754 Å | (35) |
| 3.934 Å | (40) |
| 3.510 Å | (45) |
| 3.336 Å | (35) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites |
Type Occurrence of Hylbrownite
General Appearance of Type Material:
Thin prismatic to acicular in habit and are elongate along [001], in aggregates and sprays; the crystals are up to 0.12 x 0.02 mm; forms observed: {010}, {100}, {001}, {210}, {201}.
Place of Conservation of Type Material:
South Australian Museum, Adelaide, South Australia, Australia (G33088).
Geological Setting of Type Material:
Within a seam; formed after the arsenate assemblage, within hypergene ore-bodies related likely to granite intrusion within metasediments.
Associated Minerals at Type Locality:
Synonyms of Hylbrownite
Related Minerals - Strunz-mindat Grouping
| 8.FC. | Donowensite | Ca(H2O)3Fe3+2(V2O7)2 |
| 8.FC.05 | Fianelite | Mn2+2((V,As)2O7) · 2H2O |
| 8.FC.05 | Rüdlingerite | Mn2+2V5+As5+O7 · 2H2O |
| 8.FC.10 | Canaphite | Na2Ca(P2O7) · 4H2O |
| 8.FC.15 | Pintadoite | Ca2(V2O7) · 9H2O |
| 8.FC.20 | Arnhemite | (K,Na)4Mg2(P2O7)2 · 5H2O |
| 8.FC.25 | Wooldridgeite | Na2CaCu2+2(P2O7)2 · 10H2O |
| 8.FC.30 | Kanonerovite | Na3Mn2+(P3O10) · 12H2O |
| 8.FC.35 | Mesaite | CaMn2+5(V2O7)3 · 12H2O |
Fluorescence of Hylbrownite
none
Other Information
IR Spectrum:
[cm-1]: 3287 (OH stretching), 1670 + 1643 (H-O-H bending of water), 1254 + 1118 + 1022 + 995 + 906 (asymmetric streching of PO3 groups), 906 + 742 (O-P-O stretching), 692 + 658 (O-P-O bending)
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 Hylbrownite
mindat.org URL:
https://www.mindat.org/min-41135.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 Hylbrownite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2011) New minerals and nomenclature modifications approved in 2010, CNMNC Newsletter No 7. Mineralogical Magazine, 75 (1) 27-31 doi:10.1180/minmag.2011.075.1.27
Localities for Hylbrownite
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.
Australia (TL) | |
| Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2011) New minerals and nomenclature modifications approved in 2010, CNMNC Newsletter No 7. Mineralogical Magazine, 75 (1) 27-31 doi:10.1180/minmag.2011.075.1.27 |
Italy | |
|
Quick NavTopUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
