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Henritermierite

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Big Photo

N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa
© O. Dziallas

Show Henritermierite Photos (14)



Formula:
Ca
 
3
(Mn
3+
 
,Al)
 
2
(SiO
 
4
)
 
2
(OH)
 
4
System:TetragonalColour:Clove-brown to ...
Member of:Garnet Structural Group
Name:For French geologist, Henri François Émile Termier (1897-1989).


Garnet Group. The manganese analogue of Holtstamite.

Classification of Henritermierite

IMA status:Approved 1968
Strunz 8th edition ID:8/A.08-160
Nickel-Strunz 10th (pending) edition ID:9.AD.25

9 : SILICATES (Germanates)
A : Nesosilicates
D : Nesosilicates without additional anions; cations in [6] and/or greater coordination
Dana 8th edition ID:51.4.4.1

51 : NESOSILICATES Insular SiO4 Groups Only
4 : Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Hey's CIM Ref.:16.16.19

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

Type Locality:Tachgagalt Mine, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco
Year of Discovery:1969

Occurrences of Henritermierite

Geological Setting:Manganese deposits

Physical Properties of Henritermierite

Lustre:Vitreous
Diaphaneity (Transparency):Translucent
Colour:Clove-brown to apricot-brown; lemon-yellow to pale yellow in thin section.
Streak:White
Fracture:Conchoidal
Density (measured):3.34(2) g/cm3
Density (calculated):3.40 g/cm3

Crystallography of Henritermierite

Crystal System:Tetragonal
Class (H-M):4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:I41/acd {I41/a 2/c 2/d}
Cell Parameters:a = 12.39Å, c = 11.91Å
Ratio:a:c = 1 : 0.961
Unit Cell Volume:V 1,828.33 ų (Calculated from Unit Cell)
Z:8
Morphology:As pseudo-octahedral crystals, to 3mm, and as aggregates of small grains.
Twinning:Common on {101} sectored

Optical Data of Henritermierite

Type:Uniaxial (+)
RI values: nω = 1.765 nε = 1.800
Maximum Birefringence:δ = 0.035

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Pleochroism:Weak
Comments:O = very pale yellow
E = lemon-yellow

Chemical Properties of Henritermierite

Formula:
Ca
 
3
(Mn
3+
 
,Al)
 
2
(SiO
 
4
)
 
2
(OH)
 
4
Essential elements:Ca, H, Mn, O, Si
All elements listed in formula:Al, Ca, H, Mn, O, Si
Common Impurities:Fe

Relationship of Henritermierite to other Species

Member of:Garnet Structural Group
Other Members of Group:

- +
Almandine
Fe
2+
3
Al
 
2
(SiO
 
4
)
 
3
Andradite
Ca
 
3
Fe
3+
2
(SiO
 
4
)
 
3
Berzeliite
NaCa
 
2
(Mg,Mn
2+
 
)
 
2
(AsO
 
4
)
 
3
Bitikleite-(SnAl)
Ca
 
3
SbSn(AlO
 
4
)
 
3
Bitikleite-(SnFe)
Ca
 
3
SbSn(Fe
3+
 
O
 
4
)
 
3
Bitikleite-(ZrFe)
Ca
 
3
SbZr(Fe
3+
 
O
 
4
)
 
3
Calderite
(Mn
2+
 
,Ca)
 
3
(Fe
3+
 
,Al)
 
2
(SiO
 
4
)
 
3
Goldmanite
Ca
 
3
V
3+
2
(SiO
 
4
)
 
3
Grossular
Ca
 
3
Al
 
2
(SiO
 
4
)
 
3
Hibschite
Ca
 
3
Al
 
2
(SiO
 
4
)
 
3-x
(OH)
 
4x
Irinarassite
Ca
 
3
Sn
 
2
Al
 
2
SiO
 
12
Katoite
Ca
 
3
Al
 
2
(SiO
 
4
)
 
3-x
(OH)
 
4x
Kerimasite
Ca
 
3
Zr
 
2
(SiO
 
4
)(Fe
3+
 
O
 
4
)
 
2
Kimzeyite
Ca
 
3
(Zr,Ti)
 
2
((Si,Al,Fe
3+
 
)O
 
4
)
 
3
Knorringite
Mg
 
3
Cr
 
2
(SiO
 
4
)
 
3
Majorite
Mg
 
3
(Fe
2+
 
,Si,Al)
 
2
(SiO
 
4
)
 
3
Momoiite
(Mn
2+
 
,Ca)
 
3
V
3+
2
(SiO
 
4
)
 
3
Morimotoite
Ca
 
3
(Ti,Fe
2+
 
,Fe
3+
 
)
 
2
((Si,Fe
3+
 
)O
 
4
)
 
3
Palenzonaite
(Ca,Na)
 
3
CaMn
2+
2
(VO
 
4
)
 
3
Pyrope
Mg
 
3
Al
 
2
(SiO
 
4
)
 
3
Schäferite
Ca
 
2
NaMg
 
2
(VO
 
4
)
 
3
Schorlomite
Ca
 
3
(Ti,Fe
3+
 
)
 
2
((Si,Fe
3+
 
)O
 
4
)
 
3
Spessartine
Mn
2+
3
Al
 
2
(SiO
 
4
)
 
3
Titanoan Andradite
Toturite
Ca
 
3
Sn
 
2
(SiO
 
4
)(Fe
3+
 
O
 
4
)
 
2
Uvarovite
Ca
 
3
Cr
 
2
(SiO
 
4
)
 
3
Yafsoanite
Ca
 
3
Zn
 
3
(TeO
 
6
)
 
2
Related Minerals - Nickel-Strunz Grouping):

- +
9.AD.05Larnite
Ca
 
2
SiO
 
4
9.AD.10Calcio-Olivine
Ca
 
2
SiO
 
4
9.AD.15Merwinite
Ca
 
3
Mg(SiO
 
4
)
 
2
9.AD.20Bredigite
Ca
 
7
Mg(SiO
 
4
)
 
4
9.AD.25Andradite
Ca
 
3
Fe
3+
2
(SiO
 
4
)
 
3
9.AD.25Almandine
Fe
2+
3
Al
 
2
(SiO
 
4
)
 
3
9.AD.25Calderite
(Mn
2+
 
,Ca)
 
3
(Fe
3+
 
,Al)
 
2
(SiO
 
4
)
 
3
9.AD.25Goldmanite
Ca
 
3
V
3+
2
(SiO
 
4
)
 
3
9.AD.25Grossular
Ca
 
3
Al
 
2
(SiO
 
4
)
 
3
9.AD.25Hibschite
Ca
 
3
Al
 
2
(SiO
 
4
)
 
3-x
(OH)
 
4x
9.AD.25Hydroandradite
Ca
 
3
Fe
3+
2
(SiO
 
4
)
 
3-x
(OH)
 
4x
9.AD.25Katoite
Ca
 
3
Al
 
2
(SiO
 
4
)
 
3-x
(OH)
 
4x
9.AD.25Kimzeyite
Ca
 
3
(Zr,Ti)
 
2
((Si,Al,Fe
3+
 
)O
 
4
)
 
3
9.AD.25Knorringite
Mg
 
3
Cr
 
2
(SiO
 
4
)
 
3
9.AD.25Majorite
Mg
 
3
(Fe
2+
 
,Si,Al)
 
2
(SiO
 
4
)
 
3
9.AD.25Morimotoite
Ca
 
3
(Ti,Fe
2+
 
,Fe
3+
 
)
 
2
((Si,Fe
3+
 
)O
 
4
)
 
3
9.AD.25Pyrope
Mg
 
3
Al
 
2
(SiO
 
4
)
 
3
9.AD.25Schorlomite
Ca
 
3
(Ti,Fe
3+
 
)
 
2
((Si,Fe
3+
 
)O
 
4
)
 
3
9.AD.25Spessartine
Mn
2+
3
Al
 
2
(SiO
 
4
)
 
3
9.AD.25Uvarovite
Ca
 
3
Cr
 
2
(SiO
 
4
)
 
3
9.AD.25Wadalite
(Ca,Mg)
 
6
(Al,Fe
3+
 
)
 
4
((Si,Al)O
 
4
)
 
3
O
 
4
Cl
 
3
9.AD.25Holtstamite
Ca
 
3
(Al,Mn
3+
 
)
 
2
(SiO
 
4
)
 
2
(OH)
 
4
9.AD.25Kerimasite
Ca
 
3
Zr
 
2
(SiO
 
4
)(Fe
3+
 
O
 
4
)
 
2
9.AD.25Toturite
Ca
 
3
Sn
 
2
(SiO
 
4
)(Fe
3+
 
O
 
4
)
 
2
9.AD.25Momoiite
(Mn
2+
 
,Ca)
 
3
V
3+
2
(SiO
 
4
)
 
3
9.AD.30Coffinite
(U
4+
 
,Th)(SiO
 
4
)
 
1-x
(OH)
 
4x
9.AD.30Hafnon
HfSiO
 
4
9.AD.30Thorite
(Th,U)SiO
 
4
9.AD.30Thorogummite
(Th,U)(SiO
 
4
)
 
1-x
(OH)
 
4x
9.AD.30Zircon
ZrSiO
 
4
9.AD.30Stetindite
Ce
4+
 
SiO
 
4
9.AD.35Huttonite
ThSiO
 
4
9.AD.35Tombarthite-(Y)
Y
 
4
(Si,H
 
4
)
 
4
O
 
12-x
(OH)
 
4+2x
9.AD.40Eulytine
Bi
 
4
(SiO
 
4
)
 
3
9.AD.45Reidite
ZrSiO
 
4
Related Minerals - Hey's Index Grouping:

- +
16.16.1Kanonaite
Mn
3+
 
Al(SiO
 
4
)O
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+
2
Al
 
3
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
3
16.16.5Carpholite
Mn
2+
 
Al
 
2
(Si
 
2
O
 
6
)(OH)
 
4
16.16.6Kellyite
Mn
2+
2
Al(AlSiO
 
5
)(OH)
 
4
16.16.7Pennantite
Mn
2+
5
Al(AlSi
 
3
O
 
10
)(OH)
 
8
16.16.8Akatoreite
(Mn
2+
 
,Fe
2+
 
)
 
9
Al
 
2
(HSi
 
4
O
 
13
)
 
2
(OH)
 
6
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)]Si
 
8
O
 
22
(OH)
 
2
16.16.11Masutomilite
(K,Rb)(Li,Mn
3+
 
,Al)
 
3
(AlSi
 
3
O
 
10
)(F,OH)
 
2
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
16.16.20Macfallite
Ca
 
2
(Mn
3+
 
,Al)
 
3
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
3
16.16.21Ottrélite
(Mn
2+
 
,Fe
2+
 
,Mg)Al
 
2
(SiO
 
4
)O(OH)
 
2
16.16.22Piemontite
{Ca
 
2
}{Al
 
2
Mn
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
16.16.23Okhotskite
Ca
 
2
(Mn
2+
 
,Mg)(Mn
3+
 
,Al,Fe
3+
 
)
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
2
 · H
 
2
O
16.16.24Pumpellyite-(Mn2+)
Ca
 
2
(Mn
2+
 
,Mg)(Al,Mn
3+
 
,Fe
3+
 
)
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
2
 · H
 
2
O
16.16.25Piemontite-(Sr)
{CaSr}{Al
 
2
Mn
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)

Other Names for Henritermierite

Synonyms:
IMA1968-029
Other Languages:
German:Henritermierit
Russian:Генритермьерит
Spanish:Henritermierita

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 Henritermierite

Reference List:

- +
American Mineralogist: 54: 1739.

Bulletin de Mineralogie: 92: 126-133.

Internet Links for Henritermierite

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  • Raman and XRD data at RRUFF project
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  • Henritermierite details from Handbook of Mineralogy (PDF)
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    • Localities for Henritermierite

    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.
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
    		Bull.Soc.fr.Min.Crist. 92 (1969), 185; Handbook of Mineralogy 2/1 (1995)
    South Africa
     
    • Northern Cape Province
      • Kalahari manganese fields
        • Hotazel
    		[Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]; European Journal of Mineralogy: 17(2): 375-382.
        • Kuruman
          • N'Chwaning Mines
    		[Von Bezing, K. L. et al. (1991) - The Kalahari (Afrique du Sud) manganese field : an update, Mineralogical Record, 22 (3), 279-302.]
    Minerals of South Africa
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