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Francoanellite

A valid IMA mineral species

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Francoanellite

Grotte di Castellana, Castellana Grotte, Metropolitan City of Bari, Apulia, Italy

Francoanellite

Grotte di Castellana, Castellana Grotte, Metropolitan City of Bari, Apulia, Italy

Francoanellite

Grotte di Castellana, Castellana Grotte, Metropolitan City of Bari, Apulia, Italy

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About FrancoanelliteHide

Franco Anelli

Formula:

K₃Al₅(PO₃OH)₆(PO₄)₂ · 12H₂O

Colour:

Yellowish white

Hardness:

1 - 2

Specific Gravity:

2.26

Crystal System:

Trigonal

Name:

Named for Franco Anelli (18 October 1899, Lodi, Lombardy, Italy - 23 October 1977, Bari, Apulia, Italy), professor of geography and speleologist, University of Bari, Italy, who discovered the Castellana Caves in which the mineral was found.

Type Locality:

ⓘ Grotte di Castellana, Castellana Grotte, Metropolitan City of Bari, Apulia, Italy

This page provides mineralogical data about Francoanellite.

Unique IdentifiersHide

Mindat ID:

1593

Long-form identifier:

mindat:1:1:1593:2

GUID
(UUID V4):

7e10fcec-c776-4c20-8e14-f8ad92f226c3

Classification of FrancoanelliteHide

IMA status:

Approved

Type description reference:

Balenzano, F., Dell´Anna, L., Di Pierro, M. (1976) Francoanellite, H6K3Al5(PO4)8·13H2O, a new mineral from the caves of Castellana, Puglia, southern Italy. Neues Jahrbuch für Mineralogie Monatshefte: 1976: 49-57.

Strunz-mindat (2023):

8.CH.25

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H₂O
H : With large and medium-sized cations, RO₄:H₂O < 1:1

Dana 8th ed.:

39.3.5.2

39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
3 : Miscellaneous

Hey's CIM Ref.:

19.8.8

19 : Phosphates
8 : Phosphates of Al and other metals

Mineral SymbolsHide

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

Symbol	Source	Reference
Fan	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 FrancoanelliteHide

Transparency:

Translucent

Colour:

Yellowish white

Streak:

White

Hardness:

1 - 2 on Mohs scale

Comment:

soft

Tenacity:

Waxy

Density:

2.26(2) g/cm³ (Measured) 2.295 g/cm³ (Calculated)

Optical Data of FrancoanelliteHide

Type:

Uniaxial (+)

RI values:

n_ω = 1.510(2) n_ε = 1.515(2)

Max Birefringence:

δ = 0.005

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Surface Relief:

Low

Chemical Properties of FrancoanelliteHide

Formula:

K₃Al₅(PO₃OH)₆(PO₄)₂ · 12H₂O

Elements listed:

Al, H, K, O, P - search for minerals with similar chemistry

Crystallography of FrancoanelliteHide

Crystal System:

Trigonal

Cell Parameters:

a = 8.71 Å, c = 82.5 Å

Ratio:

a:c = 1 : 9.472

Unit Cell V:

5,420.27 Å³ (Calculated from Unit Cell)

Comment:

Point Group: 3 2/m or 3m Space Group: R3c or R3c (synthetic).

Crystal StructureHide

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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)
0015844	Francoanellite	Dick S, Zeiske T (1998) Francoanellit K3Al5(HPO4)6(PO4)212H2O: struktur und synthese durch topochemische entwasserung von taranakit* Zeitschrift fur Naturforschung B53 711-719		1998	synthetic	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Francoanellite'
loop_
_publ_author_name
'Dick S'
'Zeiske T'
_journal_name_full 'Zeitschrift fur Naturforschung'
_journal_volume B53 
_journal_year 1998
_journal_page_first 711
_journal_page_last 719
_publ_section_title
;
 Francoanellit K3Al5(HPO4)6(PO4)2*12H2O: struktur und synthese durch
 topochemische entwasserung von taranakit
;
_database_code_amcsd 0015844
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'K3 Al5 P8 O44 H30'
_cell_length_a 8.690
_cell_length_b 8.690
_cell_length_c 82.27
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 5380.363
_exptl_crystal_density_diffrn      2.285
_symmetry_space_group_name_H-M 'R -3 c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '2/3+x,1/3+y,1/3+z'
  '1/3+x,2/3+y,2/3+z'
  'x,x-y,1/2+z'
  '2/3+x,1/3+x-y,5/6+z'
  '1/3+x,2/3+x-y,1/6+z'
  'y,x,1/2-z'
  '2/3+y,1/3+x,5/6-z'
  '1/3+y,2/3+x,1/6-z'
  '-x+y,y,1/2+z'
  '2/3-x+y,1/3+y,5/6+z'
  '1/3-x+y,2/3+y,1/6+z'
  '-x,-x+y,1/2-z'
  '2/3-x,1/3-x+y,5/6-z'
  '1/3-x,2/3-x+y,1/6-z'
  '-y,-x,1/2+z'
  '2/3-y,1/3-x,5/6+z'
  '1/3-y,2/3-x,1/6+z'
  'x-y,-y,1/2-z'
  '2/3+x-y,1/3-y,5/6-z'
  '1/3+x-y,2/3-y,1/6-z'
  'y,-x+y,-z'
  '2/3+y,1/3-x+y,1/3-z'
  '1/3+y,2/3-x+y,2/3-z'
  '-x+y,-x,z'
  '2/3-x+y,1/3-x,1/3+z'
  '1/3-x+y,2/3-x,2/3+z'
  '-x,-y,-z'
  '2/3-x,1/3-y,1/3-z'
  '1/3-x,2/3-y,2/3-z'
  '-y,x-y,z'
  '2/3-y,1/3+x-y,1/3+z'
  '1/3-y,2/3+x-y,2/3+z'
  'x-y,x,-z'
  '2/3+x-y,1/3+x,1/3-z'
  '1/3+x-y,2/3+x,2/3-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
K   0.00000   0.42290   0.25000   0.02500
Al1   0.00000   0.00000   0.25000   0.00800
Al2   0.00000   0.00000   0.54330   0.01300
Al3   0.00000   0.00000   0.30420   0.01000
P1   0.76200   0.04410   0.27660   0.00900
P2   0.00000   0.00000   0.64370   0.01100
O1   0.89220   0.09840   0.26290   0.01000
O2   0.83700   0.03580   0.29290   0.01500
O3   0.59950  -0.14530   0.27220   0.01700
O4   0.68990   0.17210   0.27730   0.01500
O5   0.00000   0.00000   0.62470   0.01200
O6   0.15750   0.17560   0.65000   0.01600
O7  -0.19050  -0.16020   0.52880   0.02100
O8  -0.19570  -0.15000   0.31830   0.01500
H3   0.52350  -0.22110   0.28020   0.05000
H71  -0.28350  -0.17150   0.52170   0.05700
H72  -0.23870  -0.27810   0.53200   0.05700
H81  -0.18160  -0.17360   0.32990   0.04000
H82  -0.31760  -0.18920   0.31730   0.04000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
13.83 Å	(100)
3.40 Å	(65)
2.799 Å	(62)
7.44 Å	(60)
2.773 Å	(51)
6.86 Å	(50)
5.57 Å	(37)

Geological EnvironmentHide

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 10a: Neoproterozoic oxygenation/terrestrial biosphere	<0.6
52 : Guano- and urine-derived minerals	<0.4

Type Occurrence of FrancoanelliteHide

Type Locality:

ⓘ Grotte di Castellana, Castellana Grotte, Metropolitan City of Bari, Apulia, Italy

Place of Conservation of Type Material:

Mineralogical Museum, University of Bari, Bari, Italy.
National School of Mines, Paris, France.

Geological Setting of Type Material:

Limestone cave.

Associated Minerals at Type Locality:

Taranakite

Reference:

Synonyms of FrancoanelliteHide

IMA1974-051

Other Language Names for FrancoanelliteHide

German:Francoanellit

Spanish:Francoanellita

Related Minerals - Strunz-mindat Grouping Hide

8.CH.05	Walentaite	Fe³⁺₃(P_0.84As_0.16O₄)₂(O,OH)₆As³⁺_2.56Ca_0.42Na_0.28Mn²⁺_0.35Fe²⁺_0.30O_6.1(OH)_0.9(H₂O)_0.9	Orth. mmm (2/m 2/m 2/m) : Imma
8.CH.05	Natrowalentaite	[Fe³⁺_0.5Na_0.5(H₂O)₆][NaAs³⁺₂(Fe³⁺_2.33W⁶⁺_0.67)(PO₄)₂O₇]	Orth. mmm (2/m 2/m 2/m) : Imma
8.CH.05	Halilsarpite	[Mg(H₂O)₆][CaAs³⁺₂(Fe³⁺_2.67Mo⁶⁺_0.33)(AsO₄)₂O₇]	Orth. mmm (2/m 2/m 2/m) : Imma
8.CH.10	Anapaite	Ca₂Fe²⁺(PO₄)₂ · 4H₂O	Tric. 1 : P1
8.CH.15	Picropharmacolite	Ca₄Mg(AsO₄)₂(HAsO₄)₂ · 11H₂O	Tric. 1 : P1
8.CH.20	Dittmarite	(NH₄)Mg(PO₄) · H₂O	Orth. mm2 : Pmn2₁
8.CH.20	Niahite	(NH₄)(Mn²⁺,Mg)(PO₄) · H₂O	Orth. mm2 : Pmn2₁
8.CH.25	Taranakite	(K,NH₄)Al₃(PO₄)₃(OH) · 9H₂O	Trig. 3m (3 2/m) : R3c
8.CH.30	Schertelite	(NH₄)₂MgH₂(PO₄)₂ · 4H₂O	Orth. mmm (2/m 2/m 2/m) : Pbca
8.CH.35	Hannayite	(NH₄)₂Mg₃H₄(PO₄)₄ · 8H₂O	Tric. 1 : P1
8.CH.40	Struvite	(NH₄)Mg(PO₄) · 6H₂O	Orth. mm2 : Pmn2₁
8.CH.40	Struvite-(K)	KMg(PO₄) · 6H₂O	Orth. mm2 : Pmn2₁
8.CH.40	Hazenite	KNaMg₂(PO₄)₂ · 14H₂O	Orth. mmm (2/m 2/m 2/m)
8.CH.45	Rimkorolgite	(Mg,Mn)₅(Ba,Sr,Ca)(PO₄)₄ · 8H₂O	Orth.
8.CH.50	Bakhchisaraitsevite	Na₂Mg₅(PO₄)₄ · 7H₂O	Mon. 2/m : P2₁/b
8.CH.55	Fahleite	CaZn₅Fe³⁺₂(AsO₄)₆ · 14H₂O	Orth.
8.CH.55	Smolyaninovite	Co₃Fe³⁺₂(AsO₄)₄ · 11H₂O	Orth.
8.CH.60	Barahonaite-(Al)	(Ca,Cu,Na,Fe³⁺,Al)₁₂Al₂(AsO₄)₈(OH,Cl)_x · nH₂O	Mon. 2/m : P2/b
8.CH.60	Barahonaite-(Fe)	(Ca,Cu,Na,Fe³⁺,Al)₁₂Fe³⁺₂(AsO₄)₈(OH,Cl)_x · nH₂O	Mon. 2/m : P2/b
8.CH.70	Epifanovite	NaCaCu₅(PO₄)₄[AsO₂(OH)₂] · 7H₂O	Mon. 2/m : P2₁/m
8.CH.75	Esdanaite-(Ce)	NaMnCe(PO₄)₂ · 4H₂O	Orth. 2 2 2 : P2₁ 2₁ 2₁

Other InformationHide

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 FrancoanelliteHide

mindat.org URL:

https://www.mindat.org/min-1593.html
Please feel free to link to this page.

Search Engines:

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External Links:

Look for Francoanellite on Webmineral

Look for Francoanellite on Wikipedia

Look for Francoanellite on Mineralien Atlas

Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for FrancoanelliteHide

Reference List:

Fleischer, Michael, Pabst, Adolf, Cabri, Louis J. (1976) New Mineral Names. American Mineralogist, 61 (9-10). 1053-1056

Dick, S., Zeiske, T. (1998) Francoanellit K3Al5(HPO4)6(PO4)2·12H2O: struktur und synthese durch topochemische entwässerung von taranakit. Zeitschrift für Naturforschung B Chemical Science: 53: 711-719.

Localities for FrancoanelliteHide

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.


Australia
Australian Capital Territory Paddy's River District ⓘ Cotter Caves	McQueen, K.G., Caldwell, J.R., Millstead, P.W. (1988) Primary and Secondary Minerals at the Paddy's River Mine, Australian Capital Territory. Australian Mineralogist 3, 83-100.
Paddy's River Mine ⓘ Unnamed caves	McQueen, Ken G. J. R. Caldwell P. W. Millsteed (July 1988). "Primary and Secondary Minerals at the Paddy's River Mine, Australian Capital Territory". Australian Mineralogist 3: 83–100. *Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. (2000) Handbook of Mineralogy* Vol. 4 - Arsenates, phosphates, vanadates. Mineral Data Publishing, Tucson, Arizona.**

Brazil
Pará Parauapebas Carajás iron complex N4WS Pit ⓘ Cave N4WS-0015	Piló, Luis B, Calux, Allan, Scherer, Rafael, Bernard, Enrico (2023) Bats as ecosystem engineers in iron ore caves in the Carajás National Forest, Brazilian Amazonia. Plos one, 18 (5) Public Library of Science San Francisco, CA USA.

Iran
Kurdistan Province Divandarreh County ⓘ Kraftu cave	Amin, R. H., & MORADI, M. (2022). Secondary Minerals In The Bat Guano Deposits From Karaftu Cave, Divandareh, Kurdistan Province. ع علوم زم علوم زمینYear:1401 \| Volume:32 \| Issue:124 Start Page:75 \| End Page:88 علوم زمین

Italy (TL)
Apulia Metropolitan City of Bari Castellana Grotte ⓘ Grotte di Castellana (TL)	Balenzano, F., Dell'Anna, L., Di Pierro, M. (1976) Francoanellite, H6K3Al5(PO4)8•13H2O, a new mineral from the caves of Castellana, Puglia, southern Italy. Neues Jahrbuch fϋr Mineralogie Monatshefte, 2, 49-57.
Polignano a Mare ⓘ Grotta della Rondinella	Balenzano, F., Dell'Anna, L., Di Pierro, M. (1979): Francoanellite from the "Grotta della Rondinella" (Little Swallow cave) in Apulia (southern Italy): a new occurrence and new data. Neues Jahrbuch für Mineralogie Monatshefte, 8, 363-372 Dell'Anna, L., Fiore, S., Laviano, R. (1989): I fosfati di cavità carsiche pugliesi: giaciture, natura e genesi. Atti del XV Congresso Nazionale di Speleologia. Castellana Grotte 10-13 settembre 1987. Comune di Castellana Grotte e Gruppo Puglia Grotte, Castellana Grotte, 171-187.
Taranto Province Martina Franca ⓘ Grotta del Cuoco	Dell'Anna, L., Fiore, S., Laviano, R. (1989): I fosfati di cavità carsiche pugliesi: giaciture, natura e genesi. Atti del XV Congresso Nazionale di Speleologia. Castellana Grotte 10-13 settembre 1987. Comune di Castellana Grotte e Gruppo Puglia Grotte, Castellana Grotte, 171-187.
Friuli Venezia Giulia Gorizia Province Sagrado San Martino del Carso ⓘ Grotta Due Piani	Cancian, G. (1984): I fosfati della "Grotta ad Est di San Martino del Carso" (Gorizia): brushite, idrossiapatite, francoanellite, taranakite. Atti III Covegno Triveneto di Speleologia, 17-18 nov. 1984, Vicenza, 1-8.

Romania
Constanța County ⓘ Gura Dobrogei Cave	Dumitras D, Marincea S, Diaconu G (2004) Thermal diagenesis in the phosphate-sulfate sequence from Gura Dobrogei Cave, Dobrogea, Romania. 21 st meeting of the International Mineralogical Association. p 71
Mehedinti County Dubova ⓘ Bats’ Cave (Pestera Liliecilor; Gura Ponicovei Cave; Ponicova Cave)	Marincea, Ş., Dumitraş, D. g., Diaconu, G., & Fransolet, a. m. (2004) Mineralogical Data on the Bat Guano Deposit from Gura Ponicovei Cave (Almaj Mountains, Romania). Romanian Journal of Mineral Deposits 81:126-129
Sălaj County Ileanda Răstoci ⓘ Măgurici Cave	Onac, B. P., & VEREş, D. S. (2003). Sequence of secondary phosphates deposition in a karst environment: evidence from Magurici Cave (Romania). European Journal of Mineralogy, 15(4), 741-745.

South Korea
Gangwon Province Yeongwol County ⓘ Gossi Cave	Jun, Chang-Pyo Lee, Seong-Joo Kong, Dal-Yong Kang, Il-Mo Song, Yun-Goo (2010) Mineralogy of Secondary Phosphates and Sulfates Precipitated within the Sequence of Bat Guano Deposits in the Gossi Cave, Korea. Journal of the Mineralogical Society of Korea, volume 23, issue 4, 2010, Pages 395-402

Francoanellite

About FrancoanelliteHide

Unique IdentifiersHide

Classification of FrancoanelliteHide

Mineral SymbolsHide

Physical Properties of FrancoanelliteHide

Optical Data of FrancoanelliteHide

Chemical Properties of FrancoanelliteHide

Crystallography of FrancoanelliteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of FrancoanelliteHide

Synonyms of FrancoanelliteHide

Other Language Names for FrancoanelliteHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for FrancoanelliteHide

References for FrancoanelliteHide

Localities for FrancoanelliteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide