Attakolite (original) (raw)

A valid IMA mineral species - grandfathered

About AttakoliteHide

This section is currently hidden. Click the show button to view.

Formula:

CaMn2+Al4(SiO3OH)(PO4)3(OH)4

Colour:

Pale red, white to pink

Specific Gravity:

3.09 - 3.23

Crystal System:

Monoclinic

Name:

From the Greek άττακος ("attakos") for "salmon", in allusion to its common colour.

This page provides mineralogical data about Attakolite.

Unique IdentifiersHide

This section is currently hidden. Click the show button to view.

Long-form identifier:

mindat:1:1:415:4

67477695-4e81-443e-b220-0014d6c04f93

IMA Classification of AttakoliteHide

This section is currently hidden. Click the show button to view.

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

IMA status notes:

Redefined by the IMA

IMA Formula:

CaMn2+Al4(HSiO4)(PO4)3(OH)4

Approval history:

Redefined 1992 s.p.: Grice and Dunn (1992).

Type description reference:

Classification of AttakoliteHide

This section is currently hidden. Click the show button to view.

8.BH.60

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1

43.4.13.1

43 : COMPOUND PHOSPHATES, ETC.
4 : Anhydrous Compound Phosphates, etc·, Containing Hydroxyl or Halogen

19.12.52

19 : Phosphates
12 : Phosphates of Mn

Mineral SymbolsHide

This section is currently hidden. Click the show button to view.

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

Physical Properties of AttakoliteHide

This section is currently hidden. Click the show button to view.

Colour:

Pale red, white to pink

Density:

3.09 - 3.23 g/cm3 (Measured) 3.35 g/cm3 (Calculated)

Optical Data of AttakoliteHide

This section is currently hidden. Click the show button to view.

RI values:

_n_α = 1.650 - 1.655 _n_β = 1.654 - 1.664 _n_γ = 1.661 - 1.675

2V:

Measured: 75° to 84°, Calculated: 76° to 86°

δ = 0.011 - 0.020

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

Dispersion:

r < v to r >> v; strong

Chemistry of AttakoliteHide

This section is currently hidden. Click the show button to view.

Mindat Formula:

CaMn2+Al4(SiO3OH)(PO4)3(OH)4

Common Impurities:

Pb,Mg,Na,F,Cl,S

Crystallography of AttakoliteHide

This section is currently hidden. Click the show button to view.

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 17.188(4) Å, b = 11.477(8) Å, c = 7.322(5) Å
β = 113.83(4)°

Ratio:

a:b:c = 1.498 : 1 : 0.638

Morphology:

Massive, indistinctly crystalline.

Twinning:

Possible twin lamellae are observed in thin section.

Comment:

Grice and Dunn (1992)

Crystal StructureHide

This section is currently hidden. Click the show button to view.

Load
Unit Cell |Unit Cell Packed
2x2x2 |3x3x3 |4x4x4

Show
Big Balls |Small Balls |Just Balls |Spacefill
Polyhedra Off |Si Polyhedra |All Polyhedra
Remove metal-metal sticks

Display Options
Black Background |White Background
Perspective On |Perspective Off
2D |Stereo |Red-Blue |Red-Cyan

View
CIF File Best |x |y |z |a |b |c

Rotation
Stop |Start

Labels
Console Off |On |Grey |Yellow

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0001542	Attakolite	Grice J D, Dunn P J (1992) Attakolite: New data and crystal-structure determination American Mineralogist 77 1285-1291		1992	0	293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

This section is currently hidden. Click the show button to view.

Powder Diffraction Data:

Geological EnvironmentHide

This section is currently hidden. Click the show button to view.

Type Occurrence of AttakoliteHide

This section is currently hidden. Click the show button to view.

General Appearance of Type Material:

Indistinctly crystalline, massive.

Place of Conservation of Type Material:

No designated type specimen.

Reference:

Blomstrand, C.W. (1868) Om Westanå mineralier. Öfversigt af Kongliga Vetenskaps-Akademiens Förhandlingar: 25: 197-212.

Synonyms of AttakoliteHide

This section is currently hidden. Click the show button to view.

Other Language Names for AttakoliteHide

This section is currently hidden. Click the show button to view.

Common AssociatesHide

This section is currently hidden. Click the show button to view.

Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

This section is currently hidden. Click the show button to view.

Other InformationHide

This section is currently hidden. Click the show button to view.

Notes:

Partially decomposed by acids.

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 AttakoliteHide

This section is currently hidden. Click the show button to view.

References for AttakoliteHide

This section is currently hidden. Click the show button to view.

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.

Localities for AttakoliteHide

This section is currently hidden. Click the show button to view.

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

This section is currently hidden. Click the show button to view.

- 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.