Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (6 online) Mindat Auctions

Franzinite

Big Photo

Capranica, Ronciglione, Vico Lake, Viterbo Province, Latium, Italy
© Luigi Mattei

Show Franzinite Photos (5)
Formula:
(Na,K)
 
6
Ca
 
2
[(SO
 
4
)
 
2
|Al
 
6
Si
 
6
O
 
24
] · 0.5H
 
2
O
System:HexagonalColour:Colourless, pearl white
Lustre:VitreousHardness:5
This page provides mineralogical data about Franzinite.

Classification of Franzinite

IMA status:Approved 1976
Strunz 8th edition ID:8/J.09-80
Nickel-Strunz 10th (pending) edition ID:9.FB.05

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
B : Tektosilicates with additional anions
Dana 8th edition ID:76.2.5.6

76 : TECTOSILICATES Al-Si Framework
2 : Al-Si Framework Feldspathoids and related species
Hey's CIM Ref.:17.10.13

17 : Silicates Containing other Anions
10 : Silicates with sulphate, molybdate or tungstate
mindat.org URL:http://www.mindat.org/min-1601.html
Please feel free to link to this page.

Type Occurrence of Franzinite

Type Locality:Case Collina (Toscopomici quarry), Pitigliano, Grosseto Province, Tuscany, Italy
Year of Discovery:1977

Physical Properties of Franzinite

Lustre:Vitreous
Colour:Colourless, pearl white
Streak:White
Hardness (Mohs):5

Crystallography of Franzinite

Crystal System:Hexagonal
Cell Parameters:a = 12.88Å, c = 26.58Å
Ratio:a:c = 1 : 2.064
Unit Cell Volume:V 3,818.72 ų (Calculated from Unit Cell)

Optical Data of Franzinite

Type:Uniaxial (+)
RI values: nω = 1.510 nε = 1.512
Maximum Birefringence:δ = 0.002

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low

Chemical Properties of Franzinite

Formula:
(Na,K)
 
6
Ca
 
2
[(SO
 
4
)
 
2
|Al
 
6
Si
 
6
O
 
24
] · 0.5H
 
2
O
Essential elements:Al, Ca, H, Na, O, S, Si
All elements listed in formula:Al, Ca, H, K, Na, O, S, Si
Common Impurities:Fe,Mg,K

Relationship of Franzinite to other Species

Related to:
  • Cancrinite Group
    • Related Minerals - Nickel-Strunz Grouping):
    9.FB.05Afghanite
    (Na,Ca,K)
     
    8
    		[(Cl
     
    2
    		,SO
     
    4
    		,CO
     
    3
    		)
     
    3
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		] · 0.5H
     
    2
    		O
    9.FB.05Bystrite
    (Na,K)
     
    7
    		Ca[(S
     
    3
    		)
     
    1.5
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		] · H
     
    2
    		O
    9.FB.05Cancrinite
    Na
     
    6
    		Ca
     
    2
    		[(CO
     
    3
    		)
     
    2
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		] · 2H
     
    2
    		O
    9.FB.05Cancrisilite
    Na
     
    7
    		[CO
     
    3
    		|Al
     
    5
    		Si
     
    7
    		O
     
    24
    		] · 3H
     
    2
    		O
    9.FB.05Davyne
    (Na,K)
     
    6
    		Ca
     
    2
    		[(Cl
     
    2
    		,SO
     
    4
    		)
     
    2
    		|Al
     
    6
    		Si
     
    6
    		SO
     
    24
    		]
    9.FB.05Giuseppettite
    (Na,K,Ca)
     
    7-8
    		[(SO
     
    4
    		,Cl)
     
    1-2
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		]
    9.FB.05Hydroxycancrinite
    Na
     
    8
    		[(OH)
     
    2
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		] · 2H
     
    2
    		O
    9.FB.05Liottite
    (Na,K)
     
    16
    		Ca
     
    8
    		[Cl
     
    4
    		|(SO
     
    4
    		)
     
    5
    		|(Al
     
    6
    		Si
     
    6
    		O
     
    24
    		)
     
    3
    		]
    9.FB.05Microsommite
    Na
     
    4
    		K
     
    2
    		Ca
     
    2
    		[Cl
     
    2
    		|SO
     
    4
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		]
    9.FB.05Pitiglianoite
    Na
     
    6
    		K
     
    2
    		[SO
     
    4
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		] · 2H
     
    2
    		O
    9.FB.05Quadridavyne
    (Na,K)
     
    6
    		Ca
     
    2
    		[Cl
     
    4
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		]
    9.FB.05Sacrofanite
    (Na,Ca,K)
     
    9
    		[{(OH)
     
    2
    		,SO
     
    4
    		,CO
     
    3
    		,Cl
     
    2
    		}
     
    3
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		] · 0.5H
     
    2
    		O
    9.FB.05Tounkite
    (Na,Ca,K)
     
    8
    		[Cl|(SO
     
    4
    		)
     
    2
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		] · H
     
    2
    		O
    9.FB.05Vishnevite
    (Na,K)
     
    8
    		[(SO
     
    4
    		,CO
     
    3
    		)|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		] · 2H
     
    2
    		O
    9.FB.05Marinellite
    (Na,K)
     
    42
    		Ca
     
    6
    		[Cl
     
    2
    		|(SO
     
    4
    		)
     
    8
    		|(Al
     
    6
    		Si
     
    6
    		O
     
    24
    		)
     
    6
    		] · 3 H
     
    2
    		O
    9.FB.05Farneseite
    (Na,Ca,K)
     
    56
    		[(SO
     
    4
    		)
     
    12
    		|Al
     
    42
    		Si
     
    42
    		O
     
    168
    		] · 6H
     
    2
    		O
    9.FB.05Alloriite
    (Na,Ca,K)
     
    26
    		Ca
     
    4
    		[Cl
     
    6
    		|(SO
     
    4
    		)
     
    6
    		|(Al
     
    6
    		Si
     
    6
    		O
     
    24
    		)
     
    4
    		]
    9.FB.05IMA2008-006
    [Na
     
    82.5
    		Ca
     
    33
    		K
     
    16.5
    		]
     
    132
    		(Si
     
    99
    		Al
     
    99
    		O
     
    396
    		)(SO
     
    4
    		)
     
    33
    		·4H
     
    2
    		O
    9.FB.10Bicchulite
    Ca
     
    2
    		[(OH)
     
    2
    		|Al
     
    2
    		SiO
     
    6
    		]
    9.FB.10Danalite
    Fe
    2+
    4
    		Be
     
    3
    		[S|(SiO
     
    4
    		)
     
    3
    		]
    9.FB.10Genthelvite
    Zn
     
    4
    		Be
     
    3
    		[S|(SiO
     
    4
    		)
     
    3
    		]
    9.FB.10Haüyne
    (Na,Ca)
     
    4-8
    		[Al
     
    6
    		Si
     
    6
    		(O,S)
     
    24
    		](SO
     
    4
    		,Cl)
     
    1-2
    9.FB.10Helvite
    Mn
    2+
    4
    		Be
     
    3
    		[S|(SiO
     
    4
    		)
     
    3
    		]
    9.FB.10Kamaishilite
    Ca
     
    2
    		[(OH)
     
    2
    		|Al
     
    2
    		SiO
     
    6
    		]
    9.FB.10Lazurite
    (Na,Ca)
     
    8
    		[(S,SO
     
    4
    		,Cl
     
    2
    		)|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		]
    9.FB.10Nosean
    Na
     
    8
    		[SO
     
    4
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		]
    9.FB.10Sodalite
    Na
     
    8
    		[Cl
     
    2
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		]
    9.FB.10Tsaregorodtsevite
    N(CH
     
    3
    		)
     
    4
    		[AlSi
     
    5
    		O
     
    12
    		]
    9.FB.10Tugtupite
    Na
     
    4
    		[Cl|BeAlSi
     
    4
    		O
     
    12
    		]
    9.FB.10Helvine
    9.FB.15Marialite
    Na
     
    4
    		[Cl|(AlSi
     
    3
    		O
     
    8
    		)
     
    3
    		]
    9.FB.15Meionite
    Ca
     
    4
    		[CO
     
    3
    		|(Al
     
    2
    		Si
     
    2
    		O
     
    8
    		)
     
    3
    		]
    9.FB.15Silvialite
    (Ca,Na)
     
    4
    		[(SO
     
    4
    		,CO
     
    3
    		)|(Al
     
    2
    		Si
     
    2
    		O
     
    8
    		)
     
    3
    		]
    Related Minerals - Hey's Index Grouping:
    17.10.1Nosean
    Na
     
    8
    		[SO
     
    4
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		]
    17.10.2Pitiglianoite
    Na
     
    6
    		K
     
    2
    		[SO
     
    4
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		] · 2H
     
    2
    		O
    17.10.3Vishnevite
    (Na,K)
     
    8
    		[(SO
     
    4
    		,CO
     
    3
    		)|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		] · 2H
     
    2
    		O
    17.10.4Haüyne
    (Na,Ca)
     
    4-8
    		[Al
     
    6
    		Si
     
    6
    		(O,S)
     
    24
    		](SO
     
    4
    		,Cl)
     
    1-2
    17.10.5Liottite
    (Na,K)
     
    16
    		Ca
     
    8
    		[Cl
     
    4
    		|(SO
     
    4
    		)
     
    5
    		|(Al
     
    6
    		Si
     
    6
    		O
     
    24
    		)
     
    3
    		]
    17.10.6Latiumite
    K
     
    2
    		Ca
     
    6
    		(Si,Al)
     
    11
    		O
     
    25
    		(SO
     
    4
    		,CO
     
    3
    		)
    17.10.7Tuscanite
    (K(Ca,Na)
     
    6
    		(Si,Al)
     
    10
    		O
     
    22
    		[SO
     
    4
    		,CO
     
    3
    		,(OH)
     
    2
    		]·H
     
    2
    		O
    17.10.8Microsommite
    Na
     
    4
    		K
     
    2
    		Ca
     
    2
    		[Cl
     
    2
    		|SO
     
    4
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		]
    17.10.9Delhayelite
    (Na,K)
     
    10
    		Ca
     
    5
    		Al
     
    6
    		Si
     
    32
    		O
     
    80
    		(Cl
     
    2
    		,F
     
    2
    		,SO
     
    4
    		)
     
    3
    		·18H
     
    2
    		O
    17.10.10Hydrodelhayelite
    KCa
     
    2
    		AlSi
     
    7
    		O
     
    17
    		(OH)
     
    2
    		·6H
     
    2
    		O
    17.10.11Davyne
    (Na,K)
     
    6
    		Ca
     
    2
    		[(Cl
     
    2
    		,SO
     
    4
    		)
     
    2
    		|Al
     
    6
    		Si
     
    6
    		SO
     
    24
    		]
    17.10.12Afghanite
    (Na,Ca,K)
     
    8
    		[(Cl
     
    2
    		,SO
     
    4
    		,CO
     
    3
    		)
     
    3
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		] · 0.5H
     
    2
    		O
    17.10.14Giuseppettite
    (Na,K,Ca)
     
    7-8
    		[(SO
     
    4
    		,Cl)
     
    1-2
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		]
    17.10.15Sacrofanite
    (Na,Ca,K)
     
    9
    		[{(OH)
     
    2
    		,SO
     
    4
    		,CO
     
    3
    		,Cl
     
    2
    		}
     
    3
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		] · 0.5H
     
    2
    		O
    17.10.16Chessexite
    (Na,K)
     
    4
    		Ca
     
    2
    		(Mg,Zn)
     
    3
    		Al
     
    8
    		[(SO
     
    4
    		)
     
    10
    		|(SiO
     
    4
    		)
     
    2
    		] · 40H
     
    2
    		O
    17.10.17Innelite
    Na
     
    2
    		(Ba,K)
     
    4
    		(Mg,Ca,Fe)Ti
     
    3
    		Si
     
    4
    		O
     
    18
    		(OH,F)
     
    1.5
    		SO
     
    4
    17.10.18Thaumasite
    Ca
     
    3
    		[CO
     
    3
    		|SO
     
    4
    		|Si(OH)
     
    6
    		] · 12H
     
    2
    		O
    17.10.19Ellestadite
    17.10.20Ellestadite-(Cl)
    Ca
     
    10
    		[Cl
     
    2
    		|(SO
     
    4
    		)
     
    3
    		|(SiO
     
    4
    		)
     
    3
    		]
    17.10.21Ellestadite-(OH)
    Ca
     
    10
    		[(OH,Cl,F)
     
    2
    		|(SO
     
    4
    		)
     
    3
    		|(SiO
     
    4
    		)
     
    3
    		]
    17.10.22Ellestadite-(F)
    Ca
     
    10
    		[(F,Cl,OH)
     
    2
    		|(SO
     
    4
    		)
     
    3
    		|(SiO
     
    4
    		)
     
    3
    		]
    17.10.23Mattheddleite
    Pb
     
    5
    		(Si
     
    1.2
    		S
     
    1.8
    		)O
     
    12
    		(Cl
     
    0.6
    		OH
     
    0.4
    		)
    17.10.24Queitite
    Pb
     
    4
    		Zn
     
    2
    		[SO
     
    4
    		|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    17.10.25Roeblingite
    Pb
     
    2
    		Ca
     
    6
    		Mn
    2+
     
    		[OH|SO
     
    4
    		|Si
     
    3
    		O
     
    9
    		]
     
    2
    		 · 4H
     
    2
    		O
    17.10.26Yoshimuraite
    Ba
     
    2
    		Mn
     
    2
    		TiOSi
     
    2
    		O
     
    7
    		(PO
     
    4
    		)(OH)
    17.10.27Kegelite
    Pb
     
    12
    		(Zn,Fe)
     
    2
    		Al
     
    4
    		(SO
     
    4
    		)
     
    4
    		Si
     
    11
    		O
     
    38
    		 or near
    17.10.28Wenkite
    (Ba,K)
     
    4
    		(Ca,Na)
     
    6
    		[(SO
     
    4
    		)
     
    3
    		|(Si,Al)
     
    20
    		O
     
    39
    		(OH)
     
    2
    		] · 0.5H
     
    2
    		O
    17.10.29Macquartite
    Pb
     
    3
    		Cu(CrO
     
    4
    		)(SiO
     
    3
    		)(OH)
     
    4
    		·2H
     
    2
    		O
    17.10.30Welinite
    Mn
    3+
    6
    		(W
    6+
     
    		,Mg)
     
    0.7
    		[(O,OH)
     
    3
    		|SiO
     
    4
    		]

    Other Names for Franzinite

    Synonyms:
    IMA1976-020
    German names:
    Franzinit
    Russian names:
    Францинит
    Spanish names:
    Franzinita

    Other Information

    Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

    References for Franzinite

    Reference List:American Mineralogist: 62: 1259.

    Canadian Mineralogist: 38: 657-668.

    Internet Links for Franzinite

    Search Engines:
  • Look for Franzinite on Google
  • Look for Franzinite images on Google
    • External Links:
  • Look for Franzinite on Webmineral
  • Look for Franzinite on Athena Mineralogy
  • Look for Franzinite on Wikipedia
  • Look for Franzinite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Franzinite in the Natural History Museum (London) online catalogue
  • Franzinite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Fine Minerals from Dan Weinrich Minerals
  • Lapis Mineral Magazin
  • Wright's Rock Shop - excellent mineral specimens since 1970
  • Wendel Minerals - Auktion & Shop
  • Fabre Minerals - search for Franzinite specimens
  • Buy from David K Joyce minerals
  • Find Franzinite on www.crystalclassics.co.uk
  • High-end worldwide specimens & outstanding customer service
  • Buy Fine Minerals from mineralsweb.com
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • rare and unusual minerals mainly crystallized
  • Top quality minerals from Kristalle of California
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to find out how you can sponsor this page.

    Localities for Franzinite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Italy
     
    • Latium
      • Rome Province
        • Alban Hills
    Mariani P., Scaini G.: "I minerali d'Italia" - Rizzoli, 1978 –
        • Campagnano di Roma
    		[AmMin 85:201]
      • Viterbo Province
    		Lapis 28(12), 19-28 (2003)
    • Tuscany
      • Grosseto Province
    		Merlino S., Orlandi P., 1977. Franzinite, a new mineral phase from Pitigliano (Italy). N. Jb. Mineral. Mh., 1977: 163-167.
    Neues Jahrb.Min.,Mh.(1977) 163-167
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.