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Deerite

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Big Photo

Laytonville Quarry ("Longvale"; "Longvale Quarry"), Laytonville, Coastal Range, Mendocino Co., California, USA
© Sandro Maggia

Show Deerite Photos (12)



Formula:
(Fe,Mn)
 
6
(Fe,Al)
 
3
[Si
 
6
O
 
17
]O
 
3
(OH)
 
5
System:MonoclinicColour:Black
Hardness:6
Name:In honour of Professor William Alexander Deer (1910-2009), mineralogist-petrologist, Cambridge University, Cambridge, England. Prof. Deer was one of the authors of the Rock-Forming Minerals book series (Deer, Howie and Zussman).
This page provides mineralogical data about Deerite.

Classification of Deerite

IMA status:Approved 1964
Strunz 8th edition ID:8/F.16-10
Nickel-Strunz 10th (pending) edition ID:9.DH.60

9 : SILICATES (Germanates)
D : Inosilicates
H : Inosilicates with 4-periodic single chains, Si4O12
Dana 8th edition ID:69.2.3.3

69 : INOSILICATES Chains with Side Branches or Loops
2 : Chains with Side Branches or Loops with P>2
Hey's CIM Ref.:14.18.33

14 : Silicates not Containing Aluminum
18 : Silicates of Mn and Na, K, Mg, Ca or Fe
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Type Occurrence of Deerite

Type Locality:Laytonville Quarry ("Longvale"; "Longvale Quarry"), Laytonville, Coastal Range, Mendocino Co., California, USA
Year of Discovery:1964

Occurrences of Deerite

Geological Setting:Iron-rich metasediments from the blueschist facies of metamorphism.

Physical Properties of Deerite

Lustre:Sub-Adamantine
Diaphaneity (Transparency):Translucent
Colour:Black
Streak:Dark gray
Hardness (Mohs):6
Tenacity:Brittle
Cleavage:Distinct/Good
{110}
Density (measured):3.837 g/cm3
Density (calculated):3.86 g/cm3

Crystallography of Deerite

Crystal System:Monoclinic
Cell Parameters:a = 10.786(8) Å, b = 18.88(2) Å, c = 9.564(9) Å
β = 107.45(5)°
Ratio:a:b:c = 0.571 : 1 : 0.507
Unit Cell Volume:V 1,857.98 ų (Calculated from Unit Cell)
Z:4
Twinning:[110] twin axis; submicroscopic, pervasive.

Optical Data of Deerite

Type:Biaxial
RI values: nα = 1.840(1) nγ = 1.870(1)
Birefringence:0.030
Maximum Birefringence:δ = 0.030

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:relatively strong
Pleochroism:Weak
Comments:X = dark brown, Y = Z = very dark brown, Z || c

Chemical Properties of Deerite

Formula:
(Fe,Mn)
 
6
(Fe,Al)
 
3
[Si
 
6
O
 
17
]O
 
3
(OH)
 
5
Essential elements:Fe, H, O, Si
All elements listed in formula:Al, Fe, H, Mn, O, Si
Common Impurities:Mg

Relationship of Deerite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.DH.05Leucophanite
NaCaBeSi
 
2
O
 
6
F
9.DH.10Ohmilite
Sr
 
3
(Ti,Fe
3+
 
)(Si
 
4
O
 
12
)(O,OH) · 2-3H
 
2
O
9.DH.15Haradaite
SrVSi
 
2
O
 
7
9.DH.15Suzukiite
BaVSi
 
2
O
 
7
9.DH.20Batisite
BaNaNaTi
 
2
(Si
 
4
O
 
12
)O
 
2
9.DH.20Shcherbakovite
(K,Ba)KNa(Ti,Nb)
 
2
(Si
 
4
O
 
12
)O
 
2
9.DH.25Taikanite
Sr
 
3
BaMn
2+
2
(Si
 
4
O
 
12
)O
 
2
9.DH.30Krauskopfite
BaSi
 
2
O
 
5
 · 3H
 
2
O
9.DH.35Balangeroite
(Mg,Fe
2+
 
,Fe
3+
 
,Mn
2+
 
)
 
42
Si
 
16
O
 
54
(OH)
 
40
9.DH.35Gageite
Mn
 
21
O
 
3
(Si
 
4
O
 
12
)
 
2
(OH)
 
20
9.DH.40Aenigmatite
Na
 
2
Fe
2+
5
Ti(Si
 
6
O
 
18
)O
 
2
9.DH.40Dorrite
Ca
 
2
(Mg,Fe
2+
 
)
 
2
Fe
3+
4
[O
 
2
|Al
 
4
Si
 
2
O
 
18
]
9.DH.40Høgtuvaite
(Ca,Na)
 
2
(Fe
2+
 
,Fe
3+
 
,Ti)
 
6
[O
 
2
|Be(Si,Al)
 
5
O
 
18
]
9.DH.40Krinovite
Na
 
2
Mg
 
4
Cr
3+
2
(Si
 
6
O
 
18
)O
 
2
9.DH.40Makarochkinite
Ca
 
2
Fe
2+
4
Fe
3+
 
Ti[O
 
2
|BeAlSi
 
4
O
 
18
]
9.DH.40Rhönite
Ca
 
2
(Mg,Fe
2+
 
,Fe
3+
 
,Ti)
 
6
[O
 
2
|(Si,Al)
 
6
O
 
18
]
9.DH.40Serendibite
(Ca,Na)
 
2
(Mg,Fe
2+
 
)
 
3
(Al,Fe
3+
 
)
 
3
[O
 
2
|(Si,Al,B)
 
6
O
 
18
]
9.DH.40Welshite
Ca
 
4
Mg
 
9
Sb
 
3
O
 
4
[Si
 
6
Be
 
3
AlFe
 
2
O
 
36
]
9.DH.40Wilkinsonite
Na
 
2
Fe
2+
4
Fe
3+
2
(Si
 
6
O
 
18
)O
 
2
9.DH.45Sapphirine
(Mg,Fe)
 
4-x
Al
 
4+x
[Al
 
4+x
Si
 
2-x
O
 
18
]O
 
2
9.DH.50Khmaralite
(Mg,Al,Fe)
 
16
[(Al,Si,Be)
 
12
O
 
36
]O
 
4
9.DH.55Surinamite
(Mg,Fe)
 
3
Al
 
4
BeSi
 
3
O
 
16
9.DH.65Howieite
Na(Fe,Mn)
 
10
(Fe,Al)
 
2
Si
 
12
O
 
31
(OH)
 
13
9.DH.65Taneyamalite
(Na,Ca)(Mn,Mg,Fe)
 
12
Si
 
12
(O,OH)
 
44
9.DH.70Johninnesite
Na
 
2
Mn
2+
9
Mg
 
7
(OH)
 
8
[AsO
 
4
]
 
2
[Si
 
6
O
 
17
]
 
2
9.DH.75Agrellite
NaCa
 
2
Si
 
4
O
 
10
F
Related Minerals - Hey's Index Grouping:

- +
14.18.1Nambulite
(Li,Na)Mn
 
4
Si
 
5
O
 
14
(OH)
14.18.2Natronambulite
(Na,Li)(Mn,Ca)
 
4
Si
 
5
O
 
14
OH
14.18.3Zakharovite
Na
 
4
Mn
 
5
Si
 
10
O
 
24
(OH)
 
6
 · 6H
 
2
O
14.18.4Norrishite
KLiMn
3+
2
(Si
 
4
O
 
10
)O
 
2
14.18.5Shafranovskite
(Na,K)
 
6
(Mn,Fe)
 
3
Si
 
9
O
 
24
 · 6H
 
2
O
14.18.6Abswurmbachite
CuMn
3+
6
(SiO
 
4
)O
 
8
14.18.7Donpeacorite
(Mn
2+
 
,Mg)Mg[SiO
 
3
]
 
2
14.18.8Kanoite
Mn
2+
 
(Mg,Mn
2+
 
)Si
 
2
O
 
6
14.18.9Caryopilite
(Mn,Mg)
 
3
(Si
 
2
O
 
5
)(OH)
 
4
14.18.10Gonyerite
(Mn
2+
 
,Mg)
 
5
Fe
3+
 
(Fe
3+
 
Si
 
3
O
 
10
)(OH)
 
8
14.18.11Tirodite
14.18.12Manganhumite
(Mn
2+
 
,Mg)
 
7
(SiO
 
4
)
 
3
(OH)
 
2
14.18.13Bustamite
CaMn
2+
 
(Si
 
2
O
 
6
)
14.18.14Glaucochroite
CaMn
2+
 
SiO
 
4
14.18.15Truscottite
(Ca,Mn)
 
14
Si
 
24
O
 
58
(OH)
 
8
 · 2H
 
2
O
14.18.16Santaclaraite
CaMn
 
4
[Si
 
5
O
 
14
OH](OH) · H
 
2
O
14.18.17Ferrobustamite
Ca(Fe
2+
 
,Ca,Mn
2+
 
)(Si
 
2
O
 
6
)
14.18.18Johannsenite
CaMn
2+
 
Si
 
2
O
 
6
14.18.19Neltnerite
CaMn
3+
6
(SiO
 
4
)O
 
8
14.18.20Orlymanite
Ca
 
4
Mn
 
3
Si
 
8
O
 
20
(OH)
 
6
 · 2H
 
2
O
14.18.21Inesite
Ca
 
2
(Mn,Fe)
 
7
Si
 
10
O
 
28
(OH)
 
2
 · 5H
 
2
O
14.18.22Orientite
Ca
 
2
Mn
2+
 
Mn
3+
2
(Si
 
3
O
 
10
)(OH)
 
4
14.18.23Ruizite
Ca
 
2
Mn
3+
2
[(OH)
 
2
|H
 
2
Si
 
4
O
 
13
] · 2H
 
2
O
14.18.24Bostwickite
CaMn
 
6
Si
 
3
O
 
16
 · 7H
 
2
O
14.18.25Kittatinnyite
Ca
 
2
Mn
 
2
Mn(SiO
 
4
)
 
2
(OH)
 
4
 · 9H
 
2
O
14.18.26Lithiomarsturite
LiCa
 
2
Mn
 
2
Si
 
5
O
 
14
(OH)
14.18.27Sérandite
Na(Mn
2+
 
,Ca)
 
2
(HSi
 
3
O
 
9
)
14.18.28Kvanefjeldite
Na
 
4
(Ca,Mn)(Si
 
3
O
 
7
)
 
2
(OH)
 
2
14.18.29Marsturite
NaCaMn
 
3
Si
 
5
O
 
14
(OH)
14.18.30Raite
Na
 
4
Mn
2+
3
Ti
 
0.25
Si
 
8
O
 
20
(OH)
 
2
 · 10H
 
2
O
14.18.31Richterite
{Na}{CaNa}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
14.18.32Byelorussite-(Ce)
NaBa
 
2
Ce
 
2
MnTi
 
2
[Si
 
4
O
 
12
]
 
2
O
 
2
(F,OH) · H
 
2
O
14.18.34Calderite
(Mn
2+
 
,Ca)
 
3
(Fe
3+
 
,Al)
 
2
(SiO
 
4
)
 
3
14.18.35Pyroxmangite
MnSiO
 
3
14.18.36Dannemorite
14.18.37Neotocite
(Mn,Fe,Mg)SiO
 
3
 · H
 
2
O
14.18.38Babingtonite
Ca
 
2
(Fe,Mn)FeSi
 
5
O
 
14
(OH)
14.18.39Manganbabingtonite
Ca
 
2
(Mn,Fe)FeSi
 
5
O
 
14
(OH)
14.18.40Örebroite
Mn
2+
3
(Fe
3+
 
,Sb
5+
 
)(SiO
 
4
)(O,OH)
 
3

Other Names for Deerite

Synonyms:
IMA1964-016
Other Languages:
German:Deerit
Russian:Дирит
Spanish:Deerita

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 Deerite

Reference List:

- +
Agrell, S.O. (1964), Deerite, howieite, and zussmanite, three new minerals from the Franciscan of the Laytonville district, Mendocino County, California (title only), American Mineralogist: 49.

Agrell, S.O., M.G. Bown & McKie (1965), Deerite, howieite and zussmanite, three new minerals from the Franciscan of the Laytonville district, Mendocino County, California: American Mineralogist: 50: 278.

Carmichael, I.S.E., W.S. Fyfe & D.J. Machin (1966), Low-spin ferrous iron in the iron silicate deerite: Nature: 211: 1389.

Boerner, U. (1969), Deerit, Howieit und Zussmanit, neue seltene Mineralien von einen Steinbruch bei Laytonville in Nord-Kalifornien: Aufschluss: 20: 338-341.

Fleet, M.E. (1977), The crystal structure of deerite: American Mineralogist: 62: 990-998.

American Mineralogist: 62: 1262.

Internet Links for Deerite

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  • Deerite details from Handbook of Mineralogy (PDF)
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    • Localities for Deerite

    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.
    Hide Locality List
    (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.
    China
     
    • Fujian Province
      • Longyan Prefecture
        • Shanghang Co.
          • Zijinshan ore field
    		Kaihui Yang (1998): The Gangue 57(1), 1-5.
    • Inner Mongolia Autonomous Region
      • Xilin Gol League (Xilinguole Prefecture)
        • Erenhot Co. (Erlianhaote Co.)
          • Wenduermiao Fe deposit
    		Feng Xiancan, Yang Ruiying, Song Guisen, Li Chenggui, and Lu Guojun (1986): Acta Mineralogica Sinica 6(4), 333-337.
    • Xinjiang (Xinjiang-Uygur) Autonomous Region
      • Akesu (Aksu; Aqsu) Prefecture
        • Akesu (Aksu; Aqsu) Co.
    		Lifei Zhang, Wenbo Jiang, Chunjing Wei, and Shenbao Dong (1999): Science in China, Series D (Earth Sciences), 42 (3), 233-239.
    France
     
    • Corsica
      • Haute-Corse
        • Corte
    		R. Muir Wood (1979) The Iron-Rich Blueschist Facies Minerals: I. Deerite. Mineralogical Magazine 43:251-259
    • Rhône-Alpes
      • Haute-Savoie
    		R. Muir Wood (1979) The Iron-Rich Blueschist Facies Minerals: I. Deerite. Mineralogical Magazine 43:251-259
    Greece
     
    • Aegean Islands (Aiyaíon) Department
      • Kykládes Prefecture
        • Cyclade Islands (Cyclades; Kikladhes; Nomos Kikladhon)
          • Sifnos Island
    		Eur. J. Mineral. , 1992, 4, pp. 619-634.
    Italy
     
    • Piedmont
      • Torino Province
        • Chisone Valley
          • Pragelato
            • Troncea Valley
    		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.
        • Germanasca Valley
          • Prali
    		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.
    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.
        • Susa Valley
          • Cesana Torinese
    		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.
    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.
    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.
    New Caledonia
     
    • Northern Province
    		R. Muir Wood (1979) The Iron-Rich Blueschist Facies Minerals: I. Deerite. Mineralogical Magazine 43:251-259
    R. Muir Wood (1979) The Iron-Rich Blueschist Facies Minerals: I. Deerite. Mineralogical Magazine 43:251-259
    Turkey
     
    • Central Anatolia Region
      • Eskişehir Province
    		R. Muir Wood (1979) The Iron-Rich Blueschist Facies Minerals: I. Deerite. Mineralogical Magazine 43:251-259
    USA
     
    • California
      • Mendocino Co.
        • Coastal Range
          • Laytonville
    		R. Muir Wood (1979) The Iron-Rich Blueschist Facies Minerals: I. Deerite. Mineralogical Magazine 43:251-259
    Agrell, S.O. (1964), Deerite, howieite, and zussmanite, three new minerals from the Franciscan of the Laytonville district, Mendocino County, California (title only), Am. Min.: 49.; Wood, R. W. (1979) The iron-rich blueschist facies minerals: 2. Howieite. Mineralogical Magazine 43:363-370.; Robert Muir Wood (1982) The Laytonville Quarry (Mendocino County California) Exotic Block: Iron-rich Blueschist-Facies Subduction-Zone Metamorphism. Mineralogical Magazine 45:87-99.
          • Longvale
    		Anonymous (1964), Three new minerals from California (deerite, howieite, and zussmanite): California Division of Mines and Geology, Mineral Information Service: 17: 138; USGS MRDS database (2005), loc. file ID #10286314 & 10031493.
          • Round Valley
    		Wood, R. W. (1979) The iron-rich blueschist facies minerals: 2. Howieite. Mineralogical Magazine 43:363-370.
      • San Benito Co.
        • Diablo Range
          • Llanada
            • Panoche Pass
    		Panoche Pass, California. Geological Society of America Bulletin: 76: 891; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 493.
    Wood, R. W. (1979) The iron-rich blueschist facies minerals: 2. Howieite. Mineralogical Magazine 43:363-370.
      • Sonoma Co.
        • Coast Range
          • Cazadero
    		Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 433, 493.
    Wood, R. W. (1979) The iron-rich blueschist facies minerals: 2. Howieite. Mineralogical Magazine 43:363-370.
    • Oregon
      • Coos Co.
    		R. Muir Wood (1979) The Iron-Rich Blueschist Facies Minerals: I. Deerite. Mineralogical Magazine 43:251-259; The Laytonville Quarry (Mendocino County California) Exotic Block: Iron-rich Blueschist-Facies Subduction-Zone Metamorphism. Mineralogical Magazine 45:87-99.
      • Curry Co.
    		R. Muir Wood (1979) The Iron-Rich Blueschist Facies Minerals: I. Deerite. Mineralogical Magazine 43:251-259
    • Washington
      • Skagit Co.
    		R. Muir Wood (1979) The Iron-Rich Blueschist Facies Minerals: I. Deerite. Mineralogical Magazine 43:251-259
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