Väyrynenite
A valid IMA mineral species - grandfathered
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About Väyrynenite
Heikki A. Väyrynen
Formula:
BeMn2+(PO4)(OH)
May contain minor F substituting for OH.
Colour:
Light pink to rose-red, salmon pink, pale gray, brown
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
3.22
Crystal System:
Monoclinic
Name:
Named after Heikki Allan Väyrynen (18 May 1888, Pielisjärvi, Finland - 29 August 1956), professor of mineralogy, Technical University, Helsinki (Finland).
The manganese-beryllium-phosphate väyrynenite was first recognized in 1939 as a possible new mineral by Oleg von Knorring (1915-1994). However, it was first described as a new mineral by Volborth (1954), from Viitaniemi, Eräjärvi, Finland. Additional mineralogical data and a new chemical analysis were given by Mrose and von Knorring (1959).
Name Encoding
ASCII-7:
Vayrynenite
Unique Identifiers
Mindat ID:
4220
Long-form identifier:
mindat:1:1:4220:4
IMA Classification of Väyrynenite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Mn2+Be(PO4)OH
First published:
1954
Classification of Väyrynenite
8.BA.05
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
A : With small and medium-sized cations
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
A : With small and medium-sized cations
41.5.4.3
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
22.1.20
22 : Phosphates, Arsenates or Vanadates with other Anions
1 : Phosphates, arsenates or vanadates with fluoride
22 : Phosphates, Arsenates or Vanadates with other Anions
1 : Phosphates, arsenates or vanadates with fluoride
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 |
|---|---|---|
| Väy | 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 Väyrynenite
Vitreous
Transparency:
Transparent, Translucent
Colour:
Light pink to rose-red, salmon pink, pale gray, brown
Streak:
White
Hardness:
5 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
Perfect {010}, good {100}, fair {001}.
Perfect {010}, good {100}, fair {001}.
Fracture:
Irregular/Uneven
Density:
3.22 g/cm3 (Measured) 3.23 g/cm3 (Calculated)
Optical Data of Väyrynenite
Type:
Biaxial (-)
RI values:
nα = 1.638 - 1.64 nβ = 1.658 - 1.662 nγ = 1.664 - 1.667
2V:
Measured: 46° to 55°, Calculated: 51° to 57°
Max. Birefringence:
δ = 0.026 - 0.027
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:
High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
r > v moderate
Pleochroism:
Visible
Comments:
X= orangish
Y= red
Z= dark red
Y= red
Z= dark red
Chemistry of Väyrynenite
Mindat Formula:
BeMn2+(PO4)(OH)
May contain minor F substituting for OH.
May contain minor F substituting for OH.
Element Weights:
Common Impurities:
F
Chemical Analysis
Oxide wt%:
| 1 | |
|---|---|
| MnO | 34.01 % |
| FeO | 5.92 % |
| CaO | 0.53 % |
| BeO | 13.85 % |
| Na2O | 0.20 % |
| K2O | 0.04 % |
| Al2O3 | 0.40 % |
| Li2O | traces % |
| P2O5 | 39.98 % |
| H2O+ | 4.93 % |
| H2O- | 0.19 % |
| F | 0.00 % |
| insol. | 0.06 % |
| Total: | 100.11 % |
Sample references:
| ID | Locality | Reference | Notes |
|---|---|---|---|
| 1 | Viitaniemi pegmatite, Eräjärvi area, Orivesi, Pirkanmaa, Finland | Chemical analysis by von Knorring. |
Crystallography of Väyrynenite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Cell Parameters:
a = 5.4044(6) Å, b = 14.5145(12) Å, c = 4.7052(6) Å
β = 102.798(9)°
β = 102.798(9)°
Ratio:
a:b:c = 0.372 : 1 : 0.324
Unit Cell V:
359.91 ų
Z:
4
Morphology:
Often as fine grained aggregates. Euhedral crystals are rare. Short to long prismatic crystals parallel to [001]. Forms observed: {001}, prisms {010} and {110}. Prism faces are generally striated vertically
Comment:
Huminicki and Hawthorne (2000)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.452 Å | (100) |
| 7.251 Å | (85) |
| 2.885 Å | (85) |
| 4.399 Å | (60) |
| 2.662 Å | (42) |
| 2.951 Å | (35) |
| 4.960 Å | (25) |
Comments:
Viitaniemi pegmatite, Finland. Data from Mrose and Von Knorring (1959).
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 22 : Hydration and low-? subsurface aqueous alteration (see also #23) |
Geological Setting:
Alteration product of beryl and triphylite in complex granitic pegmatites.
Type Occurrence of Väyrynenite
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, number R11807 (type).
Geological Setting of Type Material:
Granite pegmatite.
Associated Minerals at Type Locality:
Synonyms of Väyrynenite
Other Language Names for Väyrynenite
Common Associates
Associations Based on Photo Data:
| 24 photos of Väyrynenite associated with 'Cleavelandite' | Na(AlSi3O8) |
| 24 photos of Väyrynenite associated with Topaz | Al2(SiO4)(F,OH)2 |
| 21 photos of Väyrynenite associated with Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
| 16 photos of Väyrynenite associated with Muscovite | KAl2(AlSi3O10)(OH)2 |
| 14 photos of Väyrynenite associated with Quartz | SiO2 |
| 11 photos of Väyrynenite associated with Hurlbutite | CaBe2(PO4)2 |
| 11 photos of Väyrynenite associated with 'Indicolite' | |
| 11 photos of Väyrynenite associated with Schorl | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
| 9 photos of Väyrynenite associated with Tourmaline | AD3G6(T6O18)(BO3)3X3Z |
| 8 photos of Väyrynenite associated with Tantalite-(Mn) | Mn2+Ta2O6 |
Related Minerals - Strunz-mindat Grouping
| 8.BA. | Vladkuzminite | K4CuZn3(AsO4)4 |
| 8.BA. | Axelite | Na14Cu7(AsO4)8F2Cl2 |
| 8.BA. | Elramlyite-(Ce) | (◻0.67Ce0.33)Th2(PO4)2F3 |
| 8.BA. | Tomcampbellite | [KCl][Fe2+14(OH)6(PO4)6(PO3OH)2] |
| 8.BA.10 | Herderite | CaBe(PO4)F |
| 8.BA.10 | Bergslagite | CaBeAsO4(OH) |
| 8.BA.10 | Hydroxylherderite | CaBe(PO4)(OH) |
| 8.BA.15 | Babefphite | BaBePO4(F,OH) |
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 Väyrynenite
mindat.org URL:
https://www.mindat.org/min-4220.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Väyrynenite
Reference List:
Volborth, A. (1954) Väyryneniiti [BeMn[PO4](OH,F)]. Geologi(Finland): 6: 7.[Preliminary announcement]
Mrose, Mary E.; von Knorring, Oleg (1959) The mineralogy of väyrynenite, (Mn,Fe)Be(PO4)(OH). Zeitschrift für Kristallographie - Crystalline Materials, 112 (1). p.275-288. doi:10.1524/zkri.1959.112.1-6.275
Mrose, Mary E., Appleman, Daniel E. (1962) The crystal structures and crystal chemistry of väyrynenite, (Mn,Fe)Be(PO4)(OH), and euclase, AlBe(SiO4)(OH) Zeitschrift für Kristallographie - Crystalline Materials, 117 (1) 16-36 doi:10.1524/zkri.1962.117.1.16
Meixner, Heinz, Paar, Werner (1976) Vorkommen von Väyrynenit-Kristallen aus „Pakistan“. Zeitschrift für Kristallographie - Crystalline Materials, 143 (jg) 309 doi:10.1524/zkri.1976.143.jg.309
Huminicki, D. M.C., Hawthorne, F. C. (2000) Refinement of the crystal structure of väyrynenite. The Canadian Mineralogist, 38 (6) 1425-1432 doi:10.2113/gscanmin.38.6.1425
Localities for Väyrynenite
Showing 20 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.
Afghanistan | |
| Niedermayr (2001) +1 other reference |
China | |
| Yueqing Yang et al. (1987) +3 other references |
Finland | |
| Lahti (1981) |
| Volborth (1954) +5 other references |
Kazakhstan | |
| Gordiyenko et al. (1973) +1 other reference |
Nigeria | |
| Dr. Wing Tak Lui collection | |
Pakistan | |
| Moore (2005) |
| Blauwet (2006) |
| H. Obodda | |
| imported from Shigar District +2 other references | |
| Meixner & Paar (1976) |
Portugal | |
| Schnorrer-Köhler et al. (1991) |
Russia | |
| Lykova I. S. et al. (2017) |
Spain | |
| Roda Robles et al. (1999) +1 other reference |
Sweden | |
| Nysten et al. (2006) |
| Langhof et al. (2016) |
USA | |
| A.U. Falster et al. (2011) |
| Falster et al. (2019) +1 other reference |
| King et al. (1994) +1 other reference | |
| Falster et al. (1996) |
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Shengus, Roundu District, Gilgit-Baltistan, Pakistan