Allactite (original) (raw)

A valid IMA mineral species - grandfathered

About AllactiteHide

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Formula:

Mn2+7(AsO4)2(OH)8

Colour:

Brown, dark to light purplish red, brownish red, colourless to white

Crystal System:

Monoclinic

Name:

Named by Stens Anders Hjalmar Sjogren in 1884 from the Greek αλλάκτειν ("allaktein"), "to change," alluding to its marked pleochroism.

The arsenate analogue of argandite and waterhouseite.

In the structure there are 4 fully occupied hydrogen sites and at least 9 energetically favourable mono-, bi- and trifurcated hydrogen bonds (Gatta et al., 2016).

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:122:7

IMA Classification of AllactiteHide

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Approved, 'Grandfathered' (first described prior to 1959)

IMA Formula:

Mn2+7(AsO4)2(OH)8

Type description reference:

Classification of AllactiteHide

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8.BE.30

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
E : With only medium-sized cations, (OH, etc.):RO4 > 2:1

41.2.1.1

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
2 : (AB)7(XO4)2Zq

20.8.6

20 : Arsenates (also arsenates with phosphate, but without other anions)
8 : Arsenates of Mn

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

Symbol	Source	Reference
Ala	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
All	The Canadian Mineralogist (2019)	The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Pronunciation of AllactiteHide

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Pronunciation:

Play	Recorded by	Country
Sorry, your browser doesn't support HTML5 audio.	Jolyon Ralph	United Kingdom

Physical Properties of AllactiteHide

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Comment:

Lustre somewhat greasy on fracture surfaces.

Colour:

Brown, dark to light purplish red, brownish red, colourless to white

Streak:

Grayish to faint brown

Cleavage:

Distinct/Good
On {001}, distinct.

Fracture:

Irregular/Uneven

Density:

3.83 g/cm3 (Measured) 3.94 g/cm3 (Calculated)

Optical Data of AllactiteHide

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RI values:

_n_α = 1.755 - 1.761 _n_β = 1.772 - 1.786 _n_γ = 1.774 - 1.787

δ = 0.019 - 0.026

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Dispersion:

r > v, distinct to strong

Optical Extinction:

X ^ c = 51°, Y = b

Comments:

nX = Blood-red
nY = Light yellow
nZ = Sea-green

Chemistry of AllactiteHide

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Mindat Formula:

Mn2+7(AsO4)2(OH)8

Crystallography of AllactiteHide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 11.03 Å, b = 12.12 Å, c = 5.5 Å
β = 114.1°

Ratio:

a:b:c = 0.91 : 1 : 0.454

Unit Cell V:

671.17 Å³ (Calculated from Unit Cell)

Morphology:

As terminated prisms elongated on [010] , or bladed and tabular on {100} , with many forms, yielding complex wedgelike terminations. In divergent or subparallel rosette-like aggregates, to 6 mm; may be in druses.

Comment:

P21/c setting (P21/n setting also possible)

Crystallographic forms of AllactiteHide

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Crystal Atlas:

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Crystal StructureHide

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ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0000169	Allactite	Moore P B (1968) Crystal chemistry of the basic manganese arsenate minerals: II. The crystal structure of allactite American Mineralogist 53 733-741		1968	0	293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

d-spacing	Intensity
4.95 Å	(45)
3.71 Å	(65)
3.39 Å	(45)
3.28 Å	(55)
3.23 Å	(50)
3.06 Å	(100)
2.929 Å	(50)

Geological EnvironmentHide

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Geological Setting:

in a metamorphosed stratiform zinc orebody (Franklin, New Jersey, USA)

Type Occurrence of AllactiteHide

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General Appearance of Type Material:

Pink bladed crystals in groups

Geological Setting of Type Material:

As a rare secondary mineral in veinlets through metamorphosed manganese deposits

Associated Minerals at Type Locality:

Synonyms of AllactiteHide

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Other Language Names for AllactiteHide

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Relationship of Allactite to other SpeciesHide

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Other Members of Allactite Group:

Common AssociatesHide

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Associated Minerals Based on Photo Data:

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8.BE.05	Augelite	Al2(PO4)(OH)3	Mon. 2/m : _B_2/m
8.BE.10	Grattarolaite	Fe3+3(PO4)O3	Trig. 3_m_ : R_3_m
8.BE.15	Cornetite	Cu3(PO4)(OH)3	Orth. m m m _(_2/_m_2/_m_2/m ) : P b c a
8.BE.20	Clinoclase	Cu3(AsO4)(OH)3	Mon. 2/m : _P_21/b
8.BE.25	Gilmarite	Cu3(AsO4)(OH)3	Tric. 1 : _P_1
8.BE.25	Arhbarite	Cu2Mg(AsO4)(OH)3	Tric. 1 : _P_1
8.BE.30	Flinkite	Mn2+2Mn3+(AsO4)(OH)4	Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a
8.BE.30	Argandite	Mn7(VO4)2(OH)8	Mon. 2/m : _P_21/m
8.BE.30	Raadeite	Mg7(PO4)2(OH)8	Mon. 2/m
8.BE.35	Mineral E (of Dunn, et. al., 1982)	Orth. m m m _(_2/_m_2/_m_2/m )
8.BE.35	Chlorophoenicite	(Mn,Mg)3Zn2(AsO4)(OH,O)6	Mon. 2/m : _B_2/m
8.BE.35	Magnesiochlorophoenicite	(Mg,Mn)3Zn2(AsO4)(OH,O)6	Mon. 2/m : _B_2/m
8.BE.40	Gerdtremmelite	(Zn,Fe)(Al,Fe)2(AsO4)(OH)5	Tric.
8.BE.45	Dixenite	CuMn2+14Fe2+(SiO4)2(As5+O4)(As3+O3)5(OH)6	Trig. 3 : _R_3
8.BE.45	Mcgovernite	Mn19Zn3(AsO4)3(AsO3)(SiO4)3(OH)21	Trig. 3_m_ _(_32/m )
8.BE.45	Hematolite	(Mn,Mg,Al,Fe3+)15(As5+O4)2(As3+O3)(OH)23	Trig. 3 : _R_3
8.BE.45	Turtmannite	(Mn,Mg)22.5Mg3-3x((V5+,As5+)O4)3(As3+O3)x(SiO4)3O5-5x(OH)20+x	Trig.
8.BE.45	Carlfrancisite	Mn2+3(Mn2+,Mg,Fe3+,Al)42[As3+O3]2(As5+O4)4[(Si,As5+)O4]6[(As5+,Si)O4]2(OH)42	Trig. 3_m_ _(_32/m ) : R_3_c
8.BE.45	Arakiite	(Zn,Mn2+)(Mn2+,Mg)12(Fe3+,Al)2(As5+O4)2(As3+O3)(OH)23	Mon. m : B b
8.BE.45	Kraisslite	Zn3(Mn,Mg)25(Fe3+,Al)(As3+O3)2[(Si,As5+)O4]10(OH)16	Orth. 222 : _C_2221
8.BE.50	Synadelphite	Mn2+9(As5+O4)2(As3+O3)(OH)9 · 2H2O	Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a
8.BE.55	Holdenite	(Mn2+,Mg)6Zn3(AsO4)2(SiO4)(OH)8	Orth. m m m _(_2/_m_2/_m_2/m ) : C c c a
8.BE.60	Kolicite	Mn2+7Zn4(AsO4)2(SiO4)2(OH)8	Orth. m m m _(_2/_m_2/_m_2/m ) : C m c a
8.BE.65	Sabelliite	(Cu,Zn)2Zn(AsO4,SbO4)(OH)3	Trig. 3 : _P_3
8.BE.70	Jarosewichite	Mn2+3Mn3+(AsO4)(OH)6	Orth. 222
8.BE.75	Theisite	Cu5Zn5(AsO4,SbO4)2(OH)14	Orth.
8.BE.80	Coparsite	Cu4(AsO4,VO4)O2Cl	Orth. m m m _(_2/_m_2/_m_2/m ) : P b c m
8.BE.85	Waterhouseite	Mn2+7(PO4)2(OH)8	Mon. 2/m : _P_21/b
8.BE.90	Vasilseverginite	Cu9O4(AsO4)2(SO4)2	Mon. 2/m

Fluorescence of AllactiteHide

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Other InformationHide

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IR Spectrum:

OH stretching bands are present at 3236, 3288, 3387, 3446, 3484, 3562 and 3570 cm-1

Notes:

Readily soluble in HCl.

Health Risks:

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 AllactiteHide

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References for AllactiteHide

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Reference List:

**Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York.**pp.785-787

Gatta, G. Diego, Bosi, Ferdinando, Fernandez Diaz, Maria Teresa, Hålenius, Ulf (2016) H-bonding scheme in allactite: a combined single-crystal X-ray and neutron diffraction, optical absorption spectroscopy, FTIR and EPMA-WDS study. Mineralogical Magazine, 80 (5) 719-732 doi:10.1180/minmag.2016.080.020

Localities for AllactiteHide

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This 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.

Locality ListHide

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.

Australia
South Australia Pastoral Unincorporated Area Iron Knob ⓘ Iron Monarch Main Pit	Francis (2010)
Sweden
Örebro County Hällefors Grythyttan ⓘ Sjögruvan	Fontan +6 other references
Värmland County Filipstad Långban Ore District ⓘ Långban Mine	Sjögren (1886) +2 other references
ⓘ Collegiegruvan stope	Sjögren (1886)
ⓘ Japan working	Holtstam et al. (1999)
ⓘ Skottland stope	NRM collection # 250111
ⓘ Nordmark Odal Field	Gatedal (n.d.) +1 other reference
ⓘ Brattfors Mine	Magnusson (1929) +2 other references
ⓘ Finngruvan-Gröngruvan	Nysten (1987)
ⓘ Kitteln Mine	Holtstam et al. (1998)
ⓘ Moss mine (TL)	Sjögren (1884) +2 other references
Persberg ore district Pajsberg ⓘ Harstigen Mine	Nysten (2004)
USA
New Jersey Sussex County Franklin ⓘ Franklin Mine	Palache (1935) +2 other references
Ogdensburg Sterling Hill ⓘ Sterling Mine	Palache (1935) +3 other references
ⓘ North Ore Body	Peter Chin

Allactite (original) (raw)

About AllactiteHide

Unique IdentifiersHide

IMA Classification of AllactiteHide

Classification of AllactiteHide

Mineral SymbolsHide

Pronunciation of AllactiteHide

Physical Properties of AllactiteHide

Optical Data of AllactiteHide

Chemistry of AllactiteHide

Crystallography of AllactiteHide

Crystallographic forms of AllactiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of AllactiteHide

Synonyms of AllactiteHide

Other Language Names for AllactiteHide

Relationship of Allactite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Fluorescence of AllactiteHide

Other InformationHide

Internet Links for AllactiteHide

References for AllactiteHide

Localities for AllactiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide