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Furongite

A valid IMA mineral species
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About FurongiteHide

Formula:
Al13(UO2)7(PO4)13(OH)14 · 58H2O
the correct formula is Al4[(UO2)4(PO4)6](OH)2(H2O)19.5 (Dal Bo et al., 2017)
Colour:
Yellow
Lustre:
Vitreous
Hardness:
2 - 3
Specific Gravity:
2.9
Crystal System:
Triclinic
Name:
Named in 1976 using a poetic name for the Hunan Province, China, that includes the type locality.
The first natural uranyl phosphate with a U:P ratio of 2:3.

The structure is described as containing:
* infinite uranyl phosphate sheets, [(UO2)4(PO4)6]10-, || (101), which comprise "UrO5" pentagonal bipyramids and PO4 tetrahedra which share edges and vertices; their topology is related to that of the anion topology of uranophane
* hydrogen bonds which link the adjacent sheets
* Al-bearing octahedra running through the sheets and connected mainly to free apical oxygen atoms of the phosphate groups; the octahedra join to form remarkable Al2O5(OH)(H2O)5 and Al4O8(OH)2(H2O)10 clusters


Unique IdentifiersHide

Mindat ID:
1621
Long-form identifier:
mindat:1:1:1621:2
GUID
(UUID V4):
4599eb16-6894-4f7b-a6ba-8b87a1c8bdcd

IMA Classification of FurongiteHide

Approved
IMA Formula:
Al4(UO2)4(PO4)6(OH)2(H2O)19.5
First published:
1976

Classification of FurongiteHide

8.EB.50

8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
B : UO2:RO4 = 1:1
42.10.5.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
10 : A3(XO4)2Zq·xH2O
19.11.27

19 : Phosphates
11 : Phosphates of U

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
FrgIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of FurongiteHide

Vitreous
Colour:
Yellow
Hardness:
2 - 3 on Mohs scale
Cleavage:
Perfect
Very perfect on {111} and {111}
Density:
2.9 g/cm3 (Measured)    2.9 g/cm3 (Calculated)

Optical Data of FurongiteHide

Type:
Biaxial (-)
RI values:
nα = 1.543 - 1.549 nβ = 1.564 - 1.567 nγ = 1.570 - 1.575
2V:
Measured: 65° to 80°, Calculated: 64°
Max Birefringence:
δ = 0.027
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
none
Optical Extinction:
Z ∧ {111} ≃ 38°.

Chemistry of FurongiteHide

Mindat Formula:
Al13(UO2)7(PO4)13(OH)14 · 58H2O

the correct formula is Al4[(UO2)4(PO4)6](OH)2(H2O)19.5 (Dal Bo et al., 2017)

Crystallography of FurongiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 12.1685(8) Å, b = 14.1579(6) Å, c = 17.7884(6) Å
α = 79.822(3)°, β = 77.637(4)°, γ = 67.293(2)°
Ratio:
a:b:c = 0.859 : 1 : 1.256
Unit Cell V:
2746.2 ų
Z:
2
Comment:
also reported as monoclinic; the above data is from Dal Bo et al. (2017)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.2 Å(100)
8.62 Å(80)
4.310 Å(50)
3.639 Å(40)
2.868 Å(35)
5.553 Å(30)
5.096 Å(30)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
34 : Complex granite pegmatites
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47c : [Carbonates, phosphates, borates, nitrates]
47f : [Uranyl (U⁶⁺) minerals]

Type Occurrence of FurongiteHide

General Appearance of Type Material:
Tabular crystals and as dense cryptocrystalline aggregates.
Place of Conservation of Type Material:
n.d.
Geological Setting of Type Material:
Oxidation zone of a uranium deposit.
Associated Minerals at Type Locality:

Other Language Names for FurongiteHide

German:Furongit
Simplified Chinese:芙蓉铀矿
Spanish:Furongita
Traditional Chinese:芙蓉鈾礦

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Furongite associated with TrianguliteAl3(UO2)4(PO4)4(OH)5 · 5H2O
2 photos of Furongite associated with KobokoboiteAl6(PO4)4(OH)6 · 11H2O
1 photo of Furongite associated with UraniniteUO2

Related Minerals - Strunz-mindat GroupingHide

8.EB.Meta-autunite GroupA1-2(UO2)2(TO4)2 · 5-10H2O
8.EB.05AutuniteCa(UO2)2(PO4)2 · 10-12H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.EB.05HeinrichiteBa(UO2)2(AsO4)2 · 10H2OMon. 2/m : P2/b
8.EB.05KahleriteFe(UO2)2(AsO4)2 · 12H2OTet. 4/m : P42/n
8.EB.05HydronováčekiteMg(UO2)2(AsO4)2 · 12H2OTric. 1 : P1
8.EB.05SaléeiteMg(UO2)2(PO4)2 · 10H2OMon. 2/m
8.EB.05TorberniteCu(UO2)2(PO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
8.EB.05UranocirciteBa(UO2)2(PO4)2 · 10H2OTet.
8.EB.05UranospiniteCa(UO2)2(AsO4)2 · 10H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.05Xiangjiangite(Fe3+,Al)(UO2)4(PO4)2(SO4)2(OH) · 22H2OTet.
8.EB.05ZeuneriteCu(UO2)2(AsO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
8.EB.05MetarauchiteNi(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
8.EB.05NováčekiteMg(UO2)2(AsO4)2 · 10H2OMon. 2/m
8.EB.05RauchiteNi(UO2)2(AsO4)2 · 10H2OTric. 1 : P1
8.EB.10BassetiteFe2+(UO2)2(PO4)2 · 10H2OMon. 2/m
8.EB.10LehneriteMn2+(UO2)2(PO4)2 · 8H2OMon. 2/m
8.EB.10Meta-autuniteCa(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m)
8.EB.10MetasaléeiteMg(UO2)2(PO4)2 · 8H2O
8.EB.10MetauranocirciteBa(UO2)2(PO4)2 · 7H2OMon. 2 : P21
8.EB.10MetauranospiniteCa(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
8.EB.10MetaheinrichiteBa(UO2)2(AsO4)2 · 8H2OMon. 2 : P21
8.EB.10MetakahleriteFe2+(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
8.EB.10MetakirchheimeriteCo(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
8.EB.10MetanováčekiteMg(UO2)2(AsO4)2 · 8H2OTet. 4/m : P4/n
8.EB.10MetatorberniteCu(UO2)2(PO4)2 · 8H2OTet. 4/m : P4/n
8.EB.10MetazeuneriteCu(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
8.EB.10PrzhevalskitePb2(UO2)3(PO4)2(OH)4 · 3H2OTet.
8.EB.10Pseudo-autunite(H3O)4Ca2(UO2)2(PO4)4 · 5H2OOrth.
8.EB.10MetanatroautuniteNa(UO2)(PO4)(H2O)3Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
8.EB.15AbernathyiteK(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/ncc
8.EB.15Chernikovite(H3O)2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Meta-ankoleiteK2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15NatrouranospiniteNa2(UO2)2(AsO4)2 · 5H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Trögerite(H3O)(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Uramphite(NH4)2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/ncc
8.EB.15Uramarsite(NH4)(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
8.EB.20ThreadgolditeAl(UO2)2(PO4)2(OH) · 8H2OMon.
8.EB.20ChistyakovaiteAl(UO2)2(AsO4)2(F,OH) · 6.5H2OMon.
8.EB.25ArsenuranospathiteAl(UO2)2(AsO4)2F · 20H2OOrth. mm2 : Pnn2
8.EB.25Uranospathite(Al,◻)(UO2)2(PO4)2F · 20(H2O,F)Orth. mm2 : Pnn2
8.EB.30Vochtenite(Fe2+,Mg)Fe3+(UO2)4(PO4)4(OH) · 12-13H2OMon.
8.EB.35CoconinoiteFe3+2Al2(UO2)2(PO4)4(SO4)(OH)2 · 20H2OMon.
8.EB.40RanunculiteHAl(UO2)(PO4)(OH)3 · 4H2OMon.
8.EB.45TrianguliteAl3(UO2)4(PO4)4(OH)5 · 5H2OTric.
8.EB.55SabugaliteHAl(UO2)4(PO4)4 · 16H2OMon. 2/m : B2/m
8.EB.60Horákite(Bi7O7OH)[(UO2)4(PO4)2(AsO4)2(OH)2] · 3.5H2OMon. 2/m : B2/b

Fluorescence of FurongiteHide

Strong somewhat yellowish green fluorescence.

Other InformationHide

Notes:
Radioactive.
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 FurongiteHide

References for FurongiteHide

Reference List:

Localities for FurongiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- 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.
China (TL)
 
  • Hunan
Hunan 230 Laboratory et al. (1976) +1 other reference
DR Congo
 
  • South Kivu
    • Shabunda Territory
Deliens et al. (1985) +1 other reference
Spain
 
  • Extremadura
    • Cáceres
      • Tejeda de Tiétar
www.foro-minerales.com (n.d.)
 
Mineral and/or Locality  
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