Tassieite (original) (raw)

A valid IMA mineral species

Formula:

(Na,◻)Ca2(Mg,Fe2+,Fe3+)2(Fe2+,Mg)2(Fe3+,Mg)2(PO4)6 · 2H2O

Specific Gravity:

3.45 (Calculated)

Crystal System:

Orthorhombic

Name:

Named for type locality, Tassie Tarn, Stornes Peninsula, Larsemann Hills, Antarctica

Unique IdentifiersHide

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

Long-form identifier:

mindat:1:1:29006:1

c24b0b80-858d-4b65-9235-a82f796565f7

IMA Classification of TassieiteHide

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

IMA Formula:

NaCa2Mg3Fe2+2Fe3+(PO4)6 · 2H2O

Type description reference:

Grew, E. S., Armbruster, T., Medenbach, O., Yates, M. G., Carson, C. J. (2007) Tassieite, (Na,◻)Ca2(Mg,Fe2+,Fe3+)2(Fe3+,Mg)2(Fe2+,Mg)2(PO4)6 · 2H2O, a new hydrothermal wicksite-group mineral in fluorapatite nodules from granulite-facies paragneiss in the Larsemann Hills, Prydz Bay, East Antarctica. The Canadian Mineralogist, 45 (2) 293-305 doi:10.2113/gscanmin.45.2.293

Classification of TassieiteHide

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

8.CF.05

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
F : With large and medium-sized cations, RO4:H2O > 1:1

40.2.16.3

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2 : AB2(XO4)2·xH2O

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 TassieiteHide

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

Comment:

Could not be measured

Cleavage:

Perfect
good to perfect on {100}; a second intersects this at an angle of 60°

Density:

3.45 g/cm3 (Calculated)

Comment:

Could not be measured

Optical Data of TassieiteHide

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

RI values:

_n_α = 1.712(2) _n_β = 1.713(2) _n_γ = 1.722(2)

2V:

Measured: 46° (1), Calculated: 37°

δ = 0.010

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

Comments:

X dark blue, Y blue, Z light brown
Absorption: X > Y >> Z

Chemistry of TassieiteHide

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

Mindat Formula:

(Na,◻)Ca2(Mg,Fe2+,Fe3+)2(Fe2+,Mg)2(Fe3+,Mg)2(PO4)6 · 2H2O

Crystallography of TassieiteHide

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

Crystal System:

Orthorhombic

Class (H-M):

m m m _(_2/_m_2/_m_2/m ) - Dipyramidal

Cell Parameters:

a = 12.4595(7) Å, b = 11.5955(16) Å, c = 12.7504(7) Å

Ratio:

a:b:c = 1.075 : 1 : 1.1

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)
0006137	Tassieite	Grew E S, Armbruster T, Medenbach O, Yates M G, Carson C J (2007) Tassieite, (Na,_)Ca2(Mg,Fe2+,Fe3+)2(Fe3+,Mg)2(Fe2+,Mg)2(PO4)6*2H2O, a new hydrothermal wicksite-group mineral in fluorapatite nodules from granulite- facies paragneiss in the Larsemann Hills, Prydz Bay, East Antarctica The Canadian Mineralogist 45 293-305		2007	Larsemann Hills, Prydz Bay, East Antarctica	0	293
0006138	Tassieite	Grew E S, Armbruster T, Medenbach O, Yates M G, Carson C J (2007) Tassieite, (Na,_)Ca2(Mg,Fe2+,Fe3+)2(Fe3+,Mg)2(Fe2+,Mg)2(PO4)6*2H2O, a new hydrothermal wicksite-group mineral in fluorapatite nodules from granulite- facies paragneiss in the Larsemann Hills, Prydz Bay, East Antarctica The Canadian Mineralogist 45 293-305		2007	Larsemann Hills, Prydz Bay, East Antarctica	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 TassieiteHide

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

General Appearance of Type Material:

A few larger grains of tassieite (i.e., 0.5–1 mm) show crystal faces and cleavage traces, but most grains, which are 0.02 to 0.3 mm in longest dimension, are platy and anhedral

Place of Conservation of Type Material:

Holotype material (sample no. 113002A) is deposited in the National Museum of Natural History (Smithsonian Institution) as catalogue number NMNH 174436, the same as the holotype specimen for stornesite-(Y).

Geological Setting of Type Material:

occurs in a single, rounded nodule ~8–10 cm across of dark brown fluorapatite in biotite – quartz – plagioclase paragneiss

Associated Minerals at Type Locality:

Reference:

Grew, E.S., Armbruster, T., Medenbach, O., Yates, M.G., Carson, C.J. (2007) Tassieite, (Na,[])Ca2(Mg,Fe2+,Fe3+)2(Fe3+,Mg)2(Fe2+,Mg)2(PO4)6•2H2O, a hydrothermal wicksite-group mineral in fluorapatite nodules from granulite-facies paragneiss in the Larsemann Hills, Prydz Bay, East Antarctica. The Canadian Mineralogist: 45: 293-305.

Synonyms of TassieiteHide

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

Other Language Names for TassieiteHide

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

Relationship of Tassieite to other SpeciesHide

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

Other Members of this group:

Related Minerals - Strunz-mindat GroupingHide

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

Fluorescence of TassieiteHide

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

Other InformationHide

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

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 TassieiteHide

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

References for TassieiteHide

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

Reference List:

Grew, E. S., Armbruster, T., Medenbach, O., Yates, M. G., Carson, C. J. (2007) Tassieite, (Na,◻)Ca2(Mg,Fe2+,Fe3+)2(Fe3+,Mg)2(Fe2+,Mg)2(PO4)6 · 2H2O, a new hydrothermal wicksite-group mineral in fluorapatite nodules from granulite-facies paragneiss in the Larsemann Hills, Prydz Bay, East Antarctica. The Canadian Mineralogist, 45 (2) 293-305 doi:10.2113/gscanmin.45.2.293

Localities for TassieiteHide

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.