Kosnarite
A valid IMA mineral species
This page kindly sponsored in memory of Richard Kosnar
About Kosnarite
Formula:
KZr2(PO4)3
Colour:
Pale blue to pale green to colourless.
Lustre:
Vitreous
Hardness:
4½
Specific Gravity:
3.194
Crystal System:
Trigonal
Name:
Named by Michael E. Brownfield, Eugene E. Foord, Stephen J. Sutley, and Theodore Botinelly in honor of Richard Andrew "Rich" Kosnar (13 November 1946, Jersey City, New Jersey, USA - 15 January 2007), Colorado mineral dealer (Mineral Classics). He was a specialist in New Jersey traprock minerals, pegmatite and Alpine-type minerals, and Coloroado localities. In 1977 he reopened the Sweet Home mine for specimens.
This page provides mineralogical data about Kosnarite.
Unique Identifiers
Mindat ID:
2259
Long-form identifier:
mindat:1:1:2259:6
GUID
(UUID V4):
(UUID V4):
727ee819-139e-4286-980a-ec327d66bf81
IMA Classification of Kosnarite
Approved
First published:
1993
Classification of Kosnarite
8.AC.60
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
C : With medium-sized and large cations
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
C : With medium-sized and large cations
Dana 7th ed.:
38.1.9.1
38.4.12.1
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
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 |
---|---|---|
Ksn | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Kosnarite
Pronunciation:
Play | Recorded by | Country |
---|---|---|
Jolyon Ralph | United Kingdom |
Physical Properties of Kosnarite
Vitreous
Transparency:
Transparent, Translucent
Colour:
Pale blue to pale green to colourless.
Streak:
White
Hardness:
4½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
on {1012}
on {1012}
Fracture:
Conchoidal
Density:
3.194(2) g/cm3 (Measured) 3.206 g/cm3 (Calculated)
Optical Data of Kosnarite
Type:
Uniaxial (+)
RI values:
nω = 1.656 nε = 1.682
Max Birefringence:
δ = 0.026
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
Chemistry of Kosnarite
Mindat Formula:
KZr2(PO4)3
Elements listed:
Common Impurities:
Na,Rb,Mn,Hf,F
Crystallography of Kosnarite
Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
R3c
Cell Parameters:
a = 8.7205(1) Å, c = 23.9436(3) Å
Ratio:
a:c = 1 : 2.746
Unit Cell V:
1576.89 ų
Z:
6
Morphology:
Rhombohedral pseudocubic crystals
Comment:
Cell parameters from Piilonen et al. 2020.
Crystal Structure
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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) |
---|---|---|---|---|---|---|---|
0010697 | Kosnarite | Sljukic M, Matkovic B, Prodic B, Anderson D (1969) The crystal structure of KZr2(PO4)3 Zeitschrift fur Kristallographie 130 148-161 | 1969 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.329 Å | (100) |
3.806 Å | (90) |
2.928 Å | (90) |
6.41 Å | (50) |
4.679 Å | (50) |
2.502 Å | (50) |
1.903 Å | (45) |
3.167 Å | (40) |
1.826 Å | (40) |
1.641 Å | (35) |
1.320 Å | (35) |
Comments:
Mt. Mica, Maine, USA. Data from the type description.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Near-surface Processes | |
22 : Hydration and low-𝑇 subsurface aqueous alteration (see also #23) |
Geological Setting:
Late alteration mineral in granitic pegmatites.
Type Occurrence of Kosnarite
Co-Type Localities:
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 170369, 170370.
Geological Setting of Type Material:
Secondary mineral in a complex granite pegmatite.
Associated Minerals at Type Locality:
Synonyms of Kosnarite
Other Language Names for Kosnarite
Common Associates
Associated Minerals Based on Photo Data:
140 photos of Kosnarite associated with Albite | Na(AlSi3O8) |
51 photos of Kosnarite associated with Zanazziite | Ca2Mg5Be4(PO4)6(OH)4 · 6H2O |
30 photos of Kosnarite associated with Montebrasite | LiAl(PO4)(OH) |
22 photos of Kosnarite associated with Muscovite | KAl2(AlSi3O10)(OH)2 |
11 photos of Kosnarite associated with Cleavelandite | Na(AlSi3O8) |
10 photos of Kosnarite associated with Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
7 photos of Kosnarite associated with Lepidolite | |
5 photos of Kosnarite associated with Jahnsite-(CaMnMg) | {Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
4 photos of Kosnarite associated with Goyazite | SrAl3(PO4)(PO3OH)(OH)6 |
4 photos of Kosnarite associated with Rockbridgeite | Fe2+Fe3+4(PO4)3(OH)5 |
Related Minerals - Strunz-mindat Grouping
8.AC. | Angarfite | NaFe3+5(PO4)4(OH)4 · 4H2O |
8.AC. | Wopmayite | Ca6Na3◻Mn(PO4)3(PO3OH)4 |
8.AC.X | Dyrnaesite-(La) | Na8Ce4+(La,REE)2(PO4)6 |
8.AC. | Edtollite | K2NaCu5Fe3+O2(AsO4)4 |
8.AC. | Alumoedtollite | K2NaCu5AlO2(AsO4)4 |
8.AC. | Crocobelonite | CaFe3+2O(PO4)2 |
8.AC. | Manganobadalovite | NaNaMn(MgFe3+)(AsO4)3 |
8.AC. | Beershevaite | CaFe3+3(PO4)3O |
8.AC. | Calciohatertite | NaNaCa(CaFe3+)(AsO4)3 |
8.AC. | Kabalovite | Fe2+3Fe3+4(PO4)6 |
8.AC. | Nazarchukite | Ca2NiFe3+2(PO4)4 |
8.AC. | Changesite–(Y) | (Ca8Y)◻Fe2+(PO4)7 |
8.AC. | Crocobelonite-1M | CaFe3+2O(PO4)2 |
8.AC. | Ebnerite | (NH4)Zn(PO4) |
8.AC. | Magnesioqingheiite | Na2Mg(MgAl)(PO4)3 |
8.AC. | Epiebnerite | (NH4)Zn(PO4) |
8.AC.02 | Grigorievite | Cu3Fe3+2Al2(VO4)6 |
8.AC.02 | Koksharovite | CaMg2Fe3+4(VO4)6 |
8.AC.02 | Ziminaite | Fe3+ 6 (VO4)6 |
8.AC.05 | Calciojohillerite | NaCaMg3(AsO4)3 |
8.AC.05 | Howardevansite | NaCuFe2(VO4)3 |
8.AC.05 | O'Danielite | Na(Zn,Mg)3(AsO4)(AsO3OH)2 |
8.AC.05 va | Alluaudite-Na□ | ◻4Na4Mn2+4Fe3+8(PO4)12 |
8.AC.05 va | Alluaudite-Ca□ | ◻4Ca4Mn2+4Fe3+8(PO4)12 |
8.AC.05 va | Ferroalluaudite-NaNa | Na4Na4Fe2+4Fe3+8(PO4)12 |
8.AC.05 | Hagendorfite-NaNa | NaNaFe2+(Mn2+,Mn3+)(PO4)3 (?) |
8.AC.05 | Erikapohlite | Cu3(Zn,Cu,Mg)4Ca2(AsO4)6 · 2H2O |
8.AC.05 | Hatertite | Na2(Ca,Na)(Fe3+,Cu)2(AsO4)3 |
8.AC.05 | Unnamed (Na-Mg Arsenate Hydroxyarsenate) | NaMg3(AsO4)(AsO3OH)2 |
8.AC.05 | Unnamed (Na-Zn-H Arsenate Hydrxyarsenate) | Na(Na0.6Zn0.4)Zn2(H0.6AsO4)(AsO3OH)2 |
8.AC.05 | Zincobradaczekite | NaZn2Cu2(AsO4)3 |
8.AC.05 | Badalovite | Na2Mg2Fe(AsO4)3 |
8.AC.05 | Magnesiocanutite | NaMnMg2[AsO4]2[AsO2(OH)2] |
8.AC.05 | Magnesiohatertite | (Na,Ca)2Ca(Mg,Fe3+)2(AsO4)3 |
8.AC.05 | Khrenovite | Na3Fe3+2(AsO4)3 |
8.AC.05 | Paraberzeliite | NaCa2Mg2(AsO4)3 |
8.AC.05 | Camanchacaite | NaCaMg2[AsO4][AsO3(OH)]2 |
8.AC.05 | Manganohatertite | NaNaCa(MnFe3+)(AsO4)3 |
8.AC.07 | Zhanghuifenite | Na3Mn4Mg2Al(PO4)6 |
8.AC.07 | Ferrobobfergusonite | Na2Fe2+5Fe3+Al(PO4)6 |
8.AC.10 | Alluaudite | (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3 |
8.AC.10 | Arseniopleite | NaCaMnMn2(AsO4)3 |
8.AC.10 | Caryinite | (Na,Pb)(Ca,Na)CaMn2+2(AsO4)3 |
8.AC.10 | Ferroalluaudite | (Na,Ca)Fe2+(Fe3+,Mn2+,Fe2+)2(PO4)3 |
8.AC.10 | Hagendorfite | NaCaMn2+Fe2+2(PO4)3 |
8.AC.10 | Johillerite | Na(Mg,Zn)3Cu(AsO4)3 |
8.AC.10 | Maghagendorfite | (Na,◻)MgMn2+(Fe2+,Fe3+)2(PO4)3 |
8.AC.10 | Nickenichite | Na0.8Ca0.4Cu0.4(Mg,Fe)3(AsO4)3 |
8.AC.10 | Varulite | NaCaMn2+Mn2+2(PO4)3 |
8.AC.10 | Ferrohagendorfite | NaCaFe2+Fe2+2(PO4)3 |
8.AC.10 | Bradaczekite | NaCu4(AsO4)3 |
8.AC.10 | Groatite | NaCaMn2(PO4)[PO3(OH)]2 |
8.AC.15 | Bobfergusonite | Na2Mn5FeAl(PO4)6 |
8.AC.15 | Ferrowyllieite | (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3 |
8.AC.15 | Qingheiite | NaNaMn2+(MgAl)(PO4)3 |
8.AC.15 | Rosemaryite | (Na,Ca,Mn)(Mn,Fe2+)(Fe3+,Mg)Al(PO4)3 |
8.AC.15 | Wyllieite | (Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO4)3 |
8.AC.15 | Ferrorosemaryite | ◻NaFe2+Fe3+Al(PO4)3 |
8.AC.15 | Ferroqingheiite | NaNaFe2+(MgAl)(PO4)3 |
8.AC.17 | Czochralskiite | Na4Ca3Mg(PO4)4 |
8.AC.18 | Manitobaite | Na16Mn2+ 25Al8(PO4)30 |
8.AC.20 | Marićite | NaFe2+(PO4) |
8.AC.25 | Berzeliite | (NaCa2)Mg2(AsO4)3 |
8.AC.25 | Manganberzeliite | (NaCa2)Mn2+2(AsO4)3 |
8.AC.25 | Palenzonaite | (NaCa2)Mn2+2(VO4)3 |
8.AC.25 | Schäferite | (NaCa2)Mg2(VO4)3 |
8.AC.25 | Hedegaardite | (Ca,Na)9(Ca,Na)Mg(PO4)6(PO3OH) |
8.AC.25 | Matyhite | Ca18(Ca,◻)2Fe2+2(PO4)14 |
8.AC.30 | Brianite | Na2CaMg(PO4)2 |
8.AC.35 | Vitusite-(Ce) | Na3(Ce,La,Nd)(PO4)2 |
8.AC.40 | Olgite | (Sr,Ba)(Na,Sr,REE)2Na(PO4)2 |
8.AC.40 | Bario-olgite | (Ba,Sr)(Na,Sr,REE)2Na(PO4)2 · |
8.AC.45 | Strontiowhitlockite | Sr9Mg(PO4)6(PO3OH) |
8.AC.45 | Whitlockite | Ca9Mg(PO4)6(PO3OH) |
8.AC.45 | Merrillite | Ca9NaMg(PO4)7 |
8.AC.45 | Tuite | Ca3(PO4)2 |
8.AC.45 | Ferromerrillite | Ca9NaFe2+(PO4)7 |
8.AC.47 | Iwateite | Na2BaMn(PO4)2 |
8.AC.47 | Yurmarinite | Na7(Fe3+,Mg,Cu)4(AsO4)6 |
8.AC.47 | Ozerovaite | Na2KAl3(AsO4)4 |
8.AC.47 | Anatolyite | Na6(Ca,Na)(Mg,Fe3+)3Al(AsO4)6 |
8.AC.47 | Pansnerite | K3Na3(Fe3+,Al)6(AsO4)8 |
8.AC.50 | Chladniite | Na3CaMg11(PO4)9 |
8.AC.50 | Fillowite | Na3CaMn2+11(PO4)9 |
8.AC.50 | Johnsomervilleite | Na3CaFe11(PO4)9 |
8.AC.50 | Galileiite | Na3Fe2+Fe2+11(PO4)9 |
8.AC.50 | Xenophyllite | Na4Fe2+7(PO4)6 |
8.AC.50 | Udinaite | NaMg4(VO4)3 |
8.AC.50 | Arsenudinaite | NaMg4(AsO4)3 |
8.AC.52 | Lasnierite | (Ca,Sr)(Mg,Fe2+)2Al(P[O,F]4)3 |
8.AC.55 | Pharmazincite | KZnAsO4 |
8.AC.57 | Zubkovaite | Ca3Cu3(AsO4)4 |
8.AC.65 | Panethite | (Na,Ca)2(Mg,Fe2+)2(PO4)2 |
8.AC.70 | Stanfieldite | Ca4Mg5(PO4)6 |
8.AC.75 | Ronneburgite | K2MnV4O12 |
8.AC.80 | Tillmannsite | Ag3Hg[(V,As)O4] |
8.AC.85 | Filatovite | K(Al,Zn)2(As,Si)2O8 |
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 Kosnarite
mindat.org URL:
https://www.mindat.org/min-2259.html
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References for Kosnarite
Reference List:
Brownfield, Michael E., Foord, Eugene E., Sutley, Stephen J., Botinelly, Theodore (1993) Kosnarite, KZr2(PO4)3 a new mineral from Mount Mica and Black Mountain, Oxford County, Maine. American Mineralogist, 78 (5-6) 653-656
Birch, William D., Pring, Allan, Bevan, D. J. M., Kharisun, (1994) Wycheproofite: a new hydrated sodium aluminium zirconium phosphate from Wycheproof, Victoria, Australia, and a new occurrence of kosnarite. Mineralogical Magazine, 58 (393) 635-639 doi:10.1180/minmag.1994.058.393.13
Frost, Ray L., Xi, Yunfei, Scholz, Ricardo, Belotti, Fernanda M. (2012) Infrared and Raman spectroscopic characterization of the phosphate mineral kosnarite KZr2(PO4)3 in comparison with other pegmatitic phosphates. Transition Metal Chemistry, 37 (8) 777-782 doi:10.1007/s11243-012-9652-x
Localities for Kosnarite
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).
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.
Australia | |
| Birch +4 other references |
Brazil | |
| Peter Haas |
Simone Citon specimen | |
Chaves et al. (2016) | |
Fernando Brederodes | |
| Luiz Alberto Dias Menezes Filho et al. (2016) |
Peru | |
| Deditius et al. (2015) |
USA | |
| King (n.d.) |
| Brownfield et al. (1993) |
| Brownfield et al. (1993) |
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Mount Mica Quarry, Paris, Oxford County, Maine, USA