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Bytownite

Big Photo

Ottawa, Gloucester Township, Carleton Co., Ontario, Canada
© Martins da Pedra

Show Bytownite Photos (8)
Formula:
(Ca,Na)[Al(Al,Si)Si
 
2
O
 
8
]
System:TriclinicColour:Colourless, grey, or ...
Lustre:Sub-VitreousHardness:6 - 6½
Name:Named after its locality ("Bytown," now Ottawa, Ontario, Canada)
A variety of Anorthite

A Plagioclase Feldspar with an Albite : Anorthite molar ratio ranging from 10 : 90 to 30 : 70

Classification of Bytownite

Strunz 8th edition ID:8/J.07-60
Nickel-Strunz 10th (pending) edition ID:9.FA.35

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions
Hey's CIM Ref.:16.10.1

16 : Silicates Containing Aluminum and other Metals
10 : Aluminosilicates of Ca and alkalis
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Physical Properties of Bytownite

Lustre:Sub-Vitreous
Diaphaneity (Transparency):Translucent on thin edges
Colour:Colourless, grey, or white
Streak:White
Hardness (Mohs):6 - 6½
Cleavage:Perfect
on [001], good on [010]
Fracture:Step-Like

Crystallography of Bytownite

Crystal System:Triclinic

Optical Data of Bytownite

Type:Biaxial (+/-)
RI values: nα = 1.563 - 1.572 nβ = 1.568 - 1.578 nγ = 1.573 - 1.583
2V:Measured: 86° , Calculated: 80° to 88°
Maximum Birefringence:δ = 0.010 - 0.011

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

Chemical Properties of Bytownite

Formula:
(Ca,Na)[Al(Al,Si)Si
 
2
O
 
8
]
Essential elements:Al, Na, O, Si
All elements listed in formula:Al, Ca, Na, O, Si

Relationship of Bytownite to other Species

Related Minerals - Nickel-Strunz Grouping):
9.FA.IMA2007-049
NaAlSi
 
3
O
 
8
9.FA.05Kaliophilite
K[AlSiO
 
4
]
9.FA.05Kalsilite
K[AlSiO
 
4
]
9.FA.05Nepheline
(Na,K)[AlSiO
 
4
]
9.FA.05Panunzite
(Na,K)[AlSiO
 
4
]
9.FA.05Trikalsilite
(Na,K)[AlSiO
 
4
]
9.FA.05Yoshiokaite
(Ca,Na)[Al(Al,Si)O
 
4
]
9.FA.05Megakalsilite
KAlSiO
 
4
9.FA.10Malinkoite
NaBSiO
 
4
9.FA.15Virgilite
LiAlSi
 
2
O
 
6
9.FA.25Lisitsynite
KBSi
 
2
O
 
6
9.FA.30Adularia
KAlSi
 
3
O
 
8
9.FA.30Anorthoclase
(Na,K)[AlSi
 
3
O
 
8
]
9.FA.30Buddingtonite
(NH
 
4
)[AlSi
 
3
O
 
8
]
9.FA.30Celsian
Ba[Al
 
2
Si
 
2
O
 
8
]
9.FA.30Hyalophane
(K,Ba)[Al(Si,Al)Si
 
2
O
 
8
]
9.FA.30Microcline
K[AlSi
 
3
O
 
8
]
9.FA.30Orthoclase
K[AlSi
 
3
O
 
8
]
9.FA.30Sanidine
K[AlSi
 
3
O
 
8
]
9.FA.30Rubicline
(Rb,K)[AlSi
 
3
O
 
8
]
9.FA.30Kokchetavite
KAlSi
 
3
O
 
8
9.FA.30Monalbite
Na[AlSi
 
3
O
 
8
]
9.FA.35Albite
Na[AlSi
 
3
O
 
8
]
9.FA.35Andesine
(Na,Ca)[Al(Si,Al)Si
 
2
O
 
8
]
9.FA.35Anorthite
Ca[Al
 
2
Si
 
2
O
 
8
]
9.FA.35Labradorite
(Ca,Na)[Al(Al,Si)Si
 
2
O
 
8
]
9.FA.35Oligoclase
(Na,Ca)[Al(Si,Al)Si
 
2
O
 
8
]
9.FA.35Reedmergnerite
Na[BSi
 
3
O
 
8
]
9.FA.35Lingunite
(Na,Ca)AlSi
 
3
O
 
8
9.FA.40Paracelsian
Ba[Al
 
2
Si
 
2
O
 
8
]
9.FA.45Svyatoslavite
Ca[Al
 
2
Si
 
2
O
 
8
]
9.FA.50Slawsonite
(Sr,Ca)[Al
 
2
Si
 
2
O
 
8
]
9.FA.55Lisetite
CaNa
 
2
Al
 
4
Si
 
4
O
 
16
9.FA.60Banalsite
BaNa
 
2
[Al
 
2
Si
 
2
O
 
8
]
 
2
9.FA.60Stronalsite
SrNa
 
2
[Al
 
2
Si
 
2
O
 
8
]
 
2
9.FA.65Danburite
Ca[BSiO
 
4
]
 
2
9.FA.65Maleevite
BaB
 
2
Si
 
2
O
 
8
9.FA.65Pekovite
SrB
 
2
Si
 
2
O
 
8
Related Minerals - Hey's Index Grouping:
16.10.2Lisetite
CaNa
 
2
Al
 
4
Si
 
4
O
 
16
16.10.4Thomsonite-Ca
NaCa
 
2
[Al
 
5
Si
 
5
O
 
20
] · 6H
 
2
O
16.10.5Gonnardite
Na
 
2
Ca[Al
 
2
Si
 
3
O
 
10
]
 
2
 · 7H
 
2
O
16.10.6Mesolite
Na
 
2
Ca
 
2
[Al
 
2
Si
 
3
O
 
10
]
 
3
 · 8H
 
2
O
16.10.7Faujasite
16.10.8Garronite
Na
 
2
Ca
 
5
Al
 
12
Si
 
20
O
 
64
·27H
 
2
O
16.10.9Boggsite
Ca
 
8
Na
 
3
(Si,Al)
 
96
O
 
192
·70H
 
2
O
16.10.10Herschelite
16.10.11Phillipsite
16.10.12Fedorite
KNa
 
4
Ca
 
4
[HSi
 
4
O
 
10
]
 
4
 · 6H
 
2
O
16.10.13Willhendersonite
KCa[Al
 
3
Si
 
3
O
 
12
] · 5H
 
2
O
16.10.14Barrerite
(Na,K,Ca
 
0.5
)
 
2
[Al
 
2
Si
 
7
O
 
18
] · 7H
 
2
O
16.10.15Mordenite
(Na
 
2
,Ca,K
 
2
)Al
 
2
Si
 
10
O
 
24
·7H
 
2
O
16.10.16Reyerite
(Na,K)
 
2
Ca
 
14
(Si,Al)
 
24
O
 
58
(OH)
 
8
·6H
 
2
O
16.10.17Lévyne
16.10.18Clinoptilolite
16.10.19Heulandite
16.10.20Gobbinsite
Na
 
4
(Ca,Mg,K
 
2
)Al
 
6
Si
 
10
O
 
32
·12H
 
2
O
16.10.21Stilbite
16.10.22Dachiardite
(Na,K,Ca
 
0
·5)
 
4
(Al
 
4
Si
 
20
)O
 
48
·18H
 
2
O
16.10.23Offretite
KCaMgAl
 
5
Si
 
13
O
 
36
·16H
 
2
O or near
16.10.24Perlialite
K
 
9
Na(Ca,Sr)[Al
 
2
Si
 
4
O
 
12
]
 
6
 · 15H
 
2
O
16.10.25Erionite
16.10.26Paulingite
16.10.27Sodium Dachiardite
(Na
 
2
,Ca,K
 
2
)
 
4-5
Al
 
8
Si
 
40
O
 
96
·26H
 
2
O
16.10.28Mazzite-Mg
K
 
2
Mg
 
2
Ca
 
1.5
Al
 
9.5
Si
 
26.5
O
 
72
·28H
 
2
O or near
16.10.29Roggianite
Ca
 
2
Be(OH)
 
2
Al
 
2
Si
 
4
O
 
13
·2.5H
 
2
O

Other Names for Bytownite

German names:
Bytownit
Russian names:
Битовнит
Spanish names:
Bytownita

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.

Internet Links for Bytownite

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    • External Links:
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    Localities for Bytownite

    Hide Locality List
    The 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.
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    (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.
    Algeria
     
    • Skikda Province
      • Collo
        • Cape Bougaroun
    		Eur. J. Mineral. , 1996, 8, pp. 625-638.
    Angola
     
    • Huíla Province
      • Lubango City Council
    		Eur. J. Mineral. , 1993, 5, pp. 1001-1024.
    Antarctica
    AmMin 36:361-367
    AmMin 36:361-367
    Australia
     
    • New South Wales
      • Yancowinna Co.
    		Birch BH Book
      • Yungnulgra Co.
        • White Cliffs
    		Eur. J. Mineral. , 1991, 3, pp. 293-322.
    • Northern Territory
    		Zia U. Bajwah, Huckitta 1:250 000 Mineral deposit data series, Northern Territory Geological Survey, 1994
    • Tasmania
      • Huon district
    		No reference listed
    Austria
     
    • Carinthia
      • Friesach - Hüttenberg area
        • Hüttenberg
    		H. Meixner: 32(3):85-97 (1981)
    G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
          • Mosinzgraben
            • Mosinz
    		H. Meixner: Carinthia II 157./77.:88-89 (1967)
      • Karawanken Mts
    		G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
    • Lower Austria
      • Dunkelstein forest
        • Aggsbach Dorf
    		D.A. Carswell et al., Eur.J. Mineral., 1989, 1, pp. 455-466.
      • Waldviertel
        • Krems an der Donau
          • Senftenberg
    		R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    • Styria
      • Graz
        • Wildon
          • Weitendorf
    		R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    Canada
     
    • British Columbia
      • Victoria Mining Division
        • Vancouver Island
    • Ontario
      • Carleton Co.
        • Gloucester Township
    		António Manuel Ináçio Martins.
      • Fort Frances
        • Mine Centre
          • Bad Vermilion Lake
    		T. Tagai et al. , Eur. Journ. Mineral. , 1992, 4, pp. 299-305.
      • Haliburton Co.
        • Monmouth Township
          • Tory Hill
    China
     
    • Anhui Province
      • Anqing Prefecture
        • Yuexi Co.
          • Wumiao
            • Marble quarry
    Costa Rica
     
    • Alajuela Province
    El Salvador
     
    • Sonsonate Department
    		www.geo.mtu.edu/volcanoes/central_america/el_salvador/izalco/petro.html a
    France
     
    • Franche-Comté
      • Haute-Saône
        • Château-Lambert
    		F. André and J. Béhien, Bull. Minéral. , France, 1983, 106, pp. 341-351.
    F. André and J. Béhien, Bull. Minéral. , France, 1983, 106, pp. 341-351.
    F. André and J. Béhien, Bull. Minéral. , France, 1983, 106, pp. 341-351.
    F. André and J. Béhien, Bull. Minéral. , France, 1983, 106, pp. 341-351.
          • Saint-Maurice-sur-Moselle
    		F. André and J. Béhien, Bull. Minéral. , France, 1983, 106, pp. 341-351.
    • Rhône-Alpes
      • Drôme
        • Romans-sur-Isère
          • Saint-Jean-en-Royans
    		M. Christophe Michel-Lévy, Bull. Minéral. , 1987, 110, pp. 449-458.
    French West Indies
     
    • Lesser Antilles
      • Guadeloupe
        • Basse-Terre
    		Ch. Lefèvre and Ph. Cocusse, Bull. Minéral. , 1985, 108, pp. 189-208.
    Germany
     
    • Hesse
      • Gießen (Giessen)
        • Großen-Buseck
    		S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    • Lower Saxony
      • Harz Mts
        • Bad Harzburg
    		No reference listed
    • Rhineland-Palatinate
      • Eifel Mts
        • Mayen
          • Ettringen
    		Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors
    Greece
     
    • Thraki (Thrace; Thracia) Department
      • Komotini (Rodopi; Rhodope) Prefecture
        • Thermes
    		Eur. J. Mineral. , 1994, 6, pp. 733-738.
    Italy
     
    • Campania
      • Naples Province
        • Somma-Vesuvius Complex
    		www.dinet.it/Mineral-GMC/AMI/vesuvio.html.
    • Sicily
      • Siracusa Province
        • Melilli
    		S. Tonarini et al. , Eur. J. Mineral. , 1996, 8, pp. 1153-1173.
      • Trapani Province
    		Journal of Petrology (1998)
    Madagascar
     
    • Tuléar (Toliara) Province
      • Anosy (Fort Dauphin) Region
        • Amboasary Department
          • Tranomaro Commune
    		Rapport Annuel du Serv.Geol.Mad 1955
    Mexico
     
    • Durango
    		www.asahi-net.or.jp/~UG7S-KTU/e_bytown.htm
    Norway
     
    • Jan Mayen Island
    		www.albany.edu/geosciences/cwhitems.html.
    Pacific Ocean
     
    • East Pacific Rise
    		R. Hekinian et al. , Bull. Minéral. , 1985, 108, pp. 691-698.
    Russia
     
    • Eastern-Siberian Region
      • Saha Republic (Sakha Republic; Yakutia)
    		[World of Stones 12:49]
    • Northern Region
      • Karelia Republic
        • Oulanka plutonic complex
          • Olanga (Oulanka) River
    		Eur. J. Mineral. , 1993, 5, pp. 1227-1233.
    Slovakia
     
    • Banská Bystrica Region
      • Cérová Mts
    		Koděra et all.,1990: Topografická mineralógia Slovenska, I-III, 1590p
      • Štiavnica Mts
        • Banská Štiavnica Mining District
    		Koděra et all.,1990: Topografická mineralógia Slovenska, I-III, 1590p
    • Nitra Region
      • Štiavnické Mts
    		Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
    • Prešov Region
      • Northern Slanské Mts
        • Červenica (Czerwenitza)
    		Duda,R. et. all.,1981: MIneralogia severnej časti Slanských vrchov. Min.Slovaca,Monografia 2, Bratislava, 98p
    Ďuďa,R., et al., 1981: Mineralógia severnej časti Slanských vrchov. Min.Slovaca, Monografia 2, 98s
    Duda et. all.,1981:Minerály severnej časti Slanských vrchov. Min.Slovca,Monografia 2,Bratislava, 98 p
    Spain
     
    • Aragón
      • Huesca
        • Camporrells
    		B. Azambre et al. , Bull. Minéral; , 1987, 110, pp. 379-396.
        • Ribagorça (Ribagorza)
          • Estopanyà (Estopiñán)
    		B. Azambre et al. , Bull. Minéral; , 1987, 110, pp. 379-396.
    • Cantabria
      • Santander
    		B. Azambre et al. , Bull. Minéral; , 1987, 110, pp. 379-396.
    B. Azambre et al. , Bull. Minéral; , 1987, 110, pp. 379-396.
    • Catalonia
      • Lleida (Lérida)
    		B. Azambre et al. , Bull. Minéral; , 1987, 110, pp. 379-396.
    Sweden
     
    • Småland
      • Jönköping
        • Månsarp
    		S.Hjelmqvist: The titaniferous iron-ore deposit of Taberg in the southern part of Sweden. SGU C 512, 1950
    UK
     
    • England
      • Cumbria
        • North and Western Region (Cumberland)
          • Keswick District
            • Keswick
    		Mark J E - Notes on teh Geology of teh English Lake District Proceedings of teh Geologists' Assoc. Vol 16 No. 9, Aug 1900 p.455
    USA
     
    • Arizona
      • Cochise Co.
        • Tombstone District
          • Tombstone
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 330.
    • California
      • Riverside Co.
        • Crestmore
    		[micromounts@yahoogroups.com]
    • Colorado
      • Chaffee Co.
        • Sedalia District
    		("Minerals of Colorado, updated & revised", by Eckel, Edwin B., 1997)
    • Connecticut
    		Januzzi, 1976. Mineral Localities of CT and Southeastern NY State
    • Georgia
      • Elbert Co.
    		Minerals of Georgia: Their properties and occurrences. Robert Cook GGWRD Bull 92
      • Jasper Co.
        • Monticello
    		Rocks & Min.:64:198.
    Minerals of Georgia: Their properties and occurrences. Robert Cook GGWRD Bull 92
      • Towns Co.
    		Minerals of Georgia: Their properties and occurrences. Robert Cook GGWRD Bull 92
    • Maine
      • Franklin Co.
        • Farmington
    		King & Foord, 1994. Mineralogy of Maine, V.1, p.272.
      • Knox Co.
        • Warren
    		No reference listed
    • Michigan
    		www.deq.state.mi.us/documents/deq-glm-rcim-geology-Minerals_Found_In_Michigan.Pdf.
        • Menominee iron range
    		Mineralogy of Michigan (2004) Heinrich & Robinson
        • Norway Lake
    		Mineralogy of Michigan (2004) Heinrich & Robinson
    • New Hampshire
      • Grafton Co.
    		Meyers & Stewart, 1956. Geology of NH: Part III, Minerals & Mines
    • New Mexico
      • Cibola Co.
    		Minerals of New Mexico 3rd ed.
    Minerals of New Mexico 3rd ed.
      • Sandoval Co.
    		Minerals of New Mexico 3rd ed.
    Minerals of New Mexico 3rd ed.
      • Sierra Co.
    		Minerals of New Mexico 3rd ed.
      • Taos Co.
    		Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
    A Listing of North Carolina Minerals- Leonard S. Wiener and Sigrid Ballew-1995
      • Macon Co.
        • Franklin
    		Absher and McSween H.Y Jr, 1986, Winding Stair Gap granulite
    • Pennsylvania
      • York Co.
        • Warrington Township
          • Rossville
    		Mineral Collecting in Pennsylvania; pg 226-228; Geyer, Smith, Barnes, (1976)
    • South Dakota
      • Pennington Co.
    		SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
    • Virginia
      • Augusta Co.
    		Minerals of Virginia, 1990 by R. V. Dietrich
      • Pittsylvania Co.
    		Minerals of Virginia, 1990 by R. V. Dietrich
    • Washington
      • Snohomish Co.
        • Baring
          • Sunset Falls
    		Cannon, B. (1975): Minerals of Washington, p.63
    • Wisconsin
      • Lincoln Co.
    		R&M 73:11-12 pp 378-399 Wisconsin Mineral Locality Index
    Mineral and/or Locality
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