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Ottrélite

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Ottré, Vielsalm, Stavelot Massif, Luxembourg Province, Belgium
© JDehove

Show Ottrélite Photos (14)
Formula:
(Mn
2+
 
,Fe
2+
 
,Mg)Al
 
2
[O|(OH)
 
2
|SiO
 
4
]
Hardness:6 - 7


Chloritoid Group.
Mn analogue of Chloritoid

Classification of Ottrélite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/B.24-30
Nickel-Strunz 10th (pending) edition ID:9.AF.85

9 : SILICATES (Germanates)
A : Nesosilicates
F : Nesosilicates with additional anions; cations in [4], [5] and/or only [6] coordination
Dana 8th edition ID:52.3.3.3

52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
3 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Hey's CIM Ref.:16.16.21

16 : Silicates Containing Aluminum and other Metals
16 : Aluminosilicates of Mn
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Type Occurrence of Ottrélite

Type Locality:Ottré, Vielsalm, Stavelot Massif, Luxembourg Province, Belgium
Year of Discovery:1819

Physical Properties of Ottrélite

Hardness (Mohs):6 - 7

Optical Data of Ottrélite

Type:Biaxial (+)
RI values: nα = 1.709 - 1.725 nβ = 1.712 - 1.726 nγ = 1.716 - 1.732
2V:Measured: 46° to 70°, Calculated: 46° to 82°
Maximum Birefringence:δ = 0.007

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

Chemical Properties of Ottrélite

Formula:
(Mn
2+
 
,Fe
2+
 
,Mg)Al
 
2
[O|(OH)
 
2
|SiO
 
4
]
Essential elements:Al, H, Mn, O, Si
All elements listed in formula:Al, Fe, H, Mg, Mn, O, Si
Common Impurities:Ca,H2O

Relationship of Ottrélite to other Species

Related Minerals - Nickel-Strunz Grouping):
9.AF.05Sillimanite
Al
 
2
[O|SiO
 
4
]
9.AF.10Andalusite
Al
 
2
[O|SiO
 
4
]
9.AF.10Kanonaite
Mn
3+
 
Al[O|SiO
 
4
]
9.AF.15Kyanite
Al
 
2
[O|SiO
 
4
]
9.AF.20Mullite
Al
 
8
[(O,OH,F)|(Si,Al)O
 
4
]
 
4
9.AF.20Krieselite
(Al,Ga)
 
2
[(OH)
 
2
|GeO
 
4
]
9.AF.25Yoderite
Mg(Al,Fe
3+
 
)
 
3
[O|OH|(SiO
 
4
)
 
2
]
9.AF.30Magnesiostaurolite
(Mg,Li,Fe
2+
 
)
 
1.5-2
Al
 
9
[O
 
6
|(OH)
 
2
|(SiO
 
4
)
 
4
]
9.AF.30Staurolite
(Fe
2+
 
,Mg,Zn)
 
1.5-2
Al
 
9
[O
 
6
|(OH,O)
 
2
|(SiO
 
4
)
 
4
]
9.AF.30Zincostaurolite
(Zn,Li,Fe
2+
 
,Mg)
 
<2
Al
 
9
[O
 
6
|(OH)
 
2
|(SiO
 
4
)
 
4
]
9.AF.35Topaz
Al
 
2
[(F,OH)
 
2
|SiO
 
4
]
9.AF.40Norbergite
Mg
 
3
[(F,OH)
 
2
|SiO
 
4
]
9.AF.45Alleghanyite
Mn
2+
5
[(OH)
 
2
|(SiO
 
4
)
 
2
]
9.AF.45Chondrodite
(Mg,Fe
2+
 
)
 
5
[(F,OH)
 
2
|(SiO
 
4
)
 
2
]
9.AF.45Reinhardbraunsite
Ca
 
5
[(OH,F)
 
2
|(SiO
 
4
)
 
2
]
9.AF.50Humite
(Mg,Fe
2+
 
)
 
7
[(F,OH)
 
2
|(SiO
 
4
)
 
3
]
9.AF.50Manganhumite
(Mn
2+
 
,Mg)
 
7
[(OH)
 
2
|(SiO
 
4
)
 
3
]
9.AF.55Clinohumite
(Mg,Fe
2+
 
)
 
9
[(F,OH)
 
2
|(SiO
 
4
)
 
4
]
9.AF.55Sonolite
Mn
2+
9
[(OH,F)
 
2
|(SiO
 
4
)
 
4
]
9.AF.55Hydroxylclinohumite
Mg
 
9
[(OH,F)
 
2
|(SiO
 
4
)
 
4
]
9.AF.60Leucophoenicite
Mn
2+
7
[(OH)
 
2
|(SiO
 
4
)
 
3
]
9.AF.65Ribbeite
(Mn
2+
 
,Mg)
 
5
[(OH)
 
2
|(SiO
 
4
)
 
2
]
9.AF.70Jerrygibbsite
Mn
2+
9
[(OH)
 
2
|(SiO
 
4
)
 
4
]
9.AF.75Franciscanite
Mn
3+
6
V
5+
0.5
[(O,OH)
 
3
|SiO
 
4
]
9.AF.75Örebroite
Mn
2+
3
(Fe
3+
 
,Sb
5+
 
)[(O,OH)
 
3
|SiO
 
4
]
9.AF.75Welinite
Mn
3+
6
(W
6+
 
,Mg)
 
0.7
[(O,OH)
 
3
|SiO
 
4
]
9.AF.80Ellenbergerite
Mg
 
6
Al
 
6
Ti[(OH)
 
6
|(HSiO
 
4
)
 
4
|(SiO
 
4
)
 
4
]
9.AF.85Chloritoid
(Fe
2+
 
,Mg,Mn
2+
 
)Al
 
2
[O|(OH)
 
2
|SiO
 
4
]
9.AF.85Magnesiochloritoid
MgAl
 
2
[O|(OH)
 
2
|SiO
 
4
]
9.AF.90Poldervaartite
CaCa[SiO
 
3
OH](OH)
9.AF.90Olmiite
CaMn
2+
 
[SiO
 
3
(OH)](OH)
Related Minerals - Hey's Index Grouping:
16.16.1Kanonaite
Mn
3+
 
Al[O|SiO
 
4
]
16.16.2Spessartine
Mn
2+
3
Al
 
2
[SiO
 
4
]
 
3
16.16.3Davreuxite
MnAl
 
6
Si
 
4
O
 
17
(OH)
 
2
16.16.4Sursassite
Mn
 
2
Al
 
3
[(OH)
 
3
|SiO
 
4
|Si
 
2
O
 
7
]
16.16.5Carpholite
Mn
2+
 
Al
 
2
[(OH)
 
4
|Si
 
2
O
 
6
]
16.16.6Kellyite
Mn
2+
2
Al[(OH)
 
4
|AlSiO
 
5
]
16.16.7Pennantite
(Mn
 
5
Al)(Si
 
3
Al)O
 
10
(OH)
 
8
16.16.8Akatoreite
(Mn
2+
 
,Fe
2+
 
)
 
9
Al
 
2
[(OH)
 
3
|HSi
 
4
O
 
13
]
16.16.9Ganophyllite
(K,Na,Ca)
 
2
Mn
 
8
(Si,Al)
 
12
(O,OH)
 
32
·8H
 
2
O
16.16.10Kôzulite
[Na][Na
 
2
][Mn
2+
4
(Fe
3+
 
,Al)][(OH)
 
2
|Si
 
8
O
 
22
]
16.16.11Masutomilite
(K,Rb)(Li,Mn
3+
 
,Al)
 
3
[(F,OH)
 
2
|AlSi
 
3
O
 
10
]
16.16.13Howieite
Na(Fe,Mn)
 
10
(Fe,Al)
 
2
Si
 
12
O
 
31
(OH)
 
13
16.16.14Eggletonite
(Na,K,Ca)
 
2
(Mn,Fe)
 
8
(Si,Al)
 
12
O
 
29
(OH)
 
7
·11H
 
2
O
16.16.15Bannisterite
Ca
 
0.5
(K,Na)
 
0.5
(Mn,Fe,Zn)
 
10
(Si,Al)
 
16
O
 
38
(OH)
 
8
·5.5H
 
2
O
16.16.16Taneyamalite
(Na,Ca)(Mn,Mg,Fe)
 
12
Si
 
12
(O,OH)
 
44
16.16.17Zussmanite
K(Fe,Mg,Mn)
 
13
(Si,Al)
 
18
O
 
42
(OH)
 
14
16.16.18Coombsite
K(Mn,Fe,Mg)
 
13
(Si,Al)
 
18
O
 
42
(OH)
 
14
16.16.19Henritermierite
Ca
 
3
(Mn
3+
 
,Al)
 
2
[(OH)
 
4
|(SiO
 
4
)
 
2
]
16.16.20Macfallite
Ca
 
2
(Mn
3+
 
,Al)
 
3
[(OH)
 
3
|SiO
 
4
|Si
 
2
O
 
7
]
16.16.22Piemontite
{Ca
 
2
}{Al
 
2
Mn
3+
 
}[O|OH|SiO
 
4
|Si
 
2
O
 
7
]
16.16.23Okhotskite
Ca
 
8
(Mn,Mg)
 
4
(Mn,Al,Fe)
 
8
Si
 
12
O
 
56-n
(OH)
 
n
16.16.24Pumpellyite-(Mn2+)
Ca
 
2
(Mn
2+
 
,Mg)(Al,Mn
3+
 
,Fe
3+
 
)
 
2
[(OH)
 
2
|SiO
 
4
|Si
 
2
O
 
7
] · H
 
2
O
16.16.25Piemontite-(Sr)
{CaSr}{Al
 
2
Mn
3+
 
}[O|OH|SiO
 
4
|Si
 
2
O
 
7
]

Other Names for Ottrélite

Synonyms:
Newportite
German names:
NewportitOttrelit
Spanish names:
NewportitaOttrelita

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 Ottrélite

Reference List:Mineralogical Abstracts: 30: 285.

Bulletin de la Société française de Minéralogie et de Cristallographie (1978): 101: 548-557.

Internet Links for Ottrélite

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  • Look for Ottrélite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Ottrélite in the Natural History Museum (London) online catalogue
  • Ottrelite details from Handbook of Mineralogy (PDF)
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    Localities for Ottrélite

    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.
    Belgium
     
    • Liège Province
      • Stoumont
    • Luxembourg Province
      • Bastogne
      • Stavelot Massif
    		No reference listed
    No reference listed
    Ann.Mines, 4th ser. (1842) 2, 357
    Canada
     
    • Québec
      • Mégantic Co.
        • Thetford Mines
    		Harvard Museum of Natural History
    France
     
    • Languedoc-Roussillon
      • Gard
        • Trèves
          • Mas Aubert
    		R.C. Maury and P. Picot : "Conditions d'Apparition du Fer Natif dans une Enclave de Schistes Graphiteux d'une Basanite des Cévennes", Bulletin de Minéralogie, 1979, Vol. 102, N° 4, 326-332
    Germany
     
    • Saxony-Anhalt
      • Harz Mts
    		Lapis 15(7/8), 59-60 (1990)
    Italy
     
    • Piedmont
      • Torino Province
        • Susa Valley
          • Bussoleno
    		Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007): MInerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
    • Tuscany
      • Massa-Carrara Province
        • Apuan Alps
          • Massa
    Mexico
     
    • Michoacan
      • Mun. de Coalcomám
    Sweden
     
    • Skåne
      • Bromölla
        • Näsum
    		No reference listed
      • Kristianstad
        • Vånga
    		Swedish Nat.Musuem ( O.Gabrielson)
    • Värmland
      • Munkfors
        • Ransäter
    		No reference listed
    USA
     
    • Maryland
      • Frederick Co.
        • Libertytown
    		Dana 6:1071.
    • Massachusetts
      • Worcester Co.
        • Sterling
    		Emerson, 1917. Geology of Mass. & Rhode Island, p.61
    • New Mexico
      • Sierra Co.
    		Minerals of New Mexico 3rd ed.
    • North Carolina
    		Gems and Minerals of America- Jay Ellis Ransom-1974
        • Marble
    		Wilson,W.F and McKenzie, B.J.,1978, Mineral Collecting Sites in North Carolina,Information Circular 24
      • Moore Co.
        • Glendon District
    		Rocks & Min.: 60: 92.
        • Robbins District
          • Cabin Creek
    		Rocks & Min.: 60:92.
      • Randolph Co.
    		Wilson,W.F and McKenZie,B.J,1978,Mineral Collecting Sites in North Carolina, Information Circular 24
        • Staley
    		Rocks & Min.:60:93.
    • Rhode Island
      • Newport Co.
    		AmMin 12:427-436 (1927)
    Museum of Natural History, Roger Williams Park, Providence, RI collection
    Miller, 1971. RI Minerals & Their Locations
    AmMin 12:427-436
      • Providence Co.
        • Cranston
          • Arlington
        • Providence
    		Museum of Natural History, Roger Williams Park, Providence, R.I. G4196 6395
    • South Carolina
      • Cherokee Co.
        • Kings Mountain District
    		U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    • South Dakota
      • Lawrence Co.
    		SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
    • Virginia
      • Bedford Co.
    		Minerals of Virginia 1990 by R. V. Dietrich
    Mineral and/or Locality
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