Strontianite Mineral Data

Strontianite Mineral Data +

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General Strontianite Information

Chemical Formula:

SrCO3

Composition:

Molecular Weight = 147.63 gm

Strontium 59.35 % Sr 70.19 % SrO

Carbon 8.14 % C 29.81 % CO₂

Oxygen 32.51 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Sr(CO₃)

IMA Status:

Valid Species (Pre-IMA) 1791

Locality:

Strontian (Scotland). Link to MinDat.org Location Data.

Name Origin:

Named after its containing the element Strontium.

Synonym:

ICSD 202793

PDF 5-418

Strontianite Image

Images:

Strontianite

Comments: Lustrous, white strontianite crystals covering all sides of matrix. The strontianite fluoresces bright blue-white under UV illumination.
Location: Lime City Quarry, Lime City, Wood Co., Ohio, USA. Scale: 6x5x4 cm.
© John Betts - Fine Minerals

Strontianite Crystallography

Axial Ratios:

a:b:c =0.6069:1:0.7165

Cell Dimensions:

a = 5.107, b = 8.414, c = 6.029, Z = 4; V = 259.07 Den(Calc)= 3.78

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmcn

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.535(1), 3.45(0.7), 2.053(0.5),

Forms:

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Forms: [ 0 0 1] [ 0 1 1] [ 1 0 1] [ 2 1 0]

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Crystal Structure:

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de Villiers J P R , American Mineralogist , 56 (1971) p.758-767, Crystal structures of aragonite, strontianite, and witherite

View Additional jPOWD Structure files for Strontianite
[1]

Physical Properties of Strontianite

Cleavage:

[110] Good

Color:

Colorless, Greenish, Gray, Gray white, Yellowish.

Density:

3.78

Diaphaniety:

Transparent to translucent

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Habit:

Columnar - Forms columns

Habit:

Massive - Granular - Common texture observed in granite and other igneous rock.

Habit:

Pseudo Hexagonal - Crystals show a hexagonal outline.

Hardness:

3.5 - Copper Penny

Luminescence:

None.

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Strontianite

Gladstone-Dale:

CI meas= 0.009 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.009 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1632,KPDmeas= 0.1632,KC= 0.1647

Optical Data:

Biaxial (-), a=1.516-1.52, b=1.664-1.667, g=1.666-1.668, bire=0.1480-0.1500, 2V(Calc)=12-8, 2V(Meas)=7. Dispersion weak, r < v.

Pleochroism (x):

colorless.

Pleochroism (y):

colorless.

Pleochroism (z):

colorless.

Calculated Properties of Strontianite

Electron Density:

r_electron=3.48 gm/cc
note: r_Strontianite=3.78 gm/cc.

Fermion Index

Fermion Index = 0.04259
Boson Index = 0.95741

Photoelectric:

PE_Strontianite= 68.16 barns/electron
U=PE_Strontianite x r_electron= 237.35 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Strontianite is Not Radioactive

Strontianite Classification

Dana Class:

14.1.3.3 (14)Anhydrous Carbonates

(14.1)with Simple Formula A+ CO3

(14.1.3)Aragonite Group (Orthorhombic: Pmcn)

14.1.3.1 Aragonite CaCO3 Pmcn 2/m 2/m 2/m

14.1.3.2 Witherite BaCO3 Pmcn 2/m 2/m 2/m

14.1.3.3 Strontianite SrCO3 Pmcn 2/m 2/m 2/m

14.1.3.4 Cerussite PbCO3 Pmcn 2/m 2/m 2/m

Strunz Class:

V/B.04-20 V - Nitrates, Carbonates and Borates

V/B - Waterfree carbonates [CO3]2- without unfamiliar anions

V/B.04 - Aragonite group

V/B.04-10 Aragonite CaCO3 Pmcn 2/m 2/m 2/m

V/B.04-20 Strontianite SrCO3 Pmcn 2/m 2/m 2/m

V/B.04-30 Witherite BaCO3 Pmcn 2/m 2/m 2/m

V/B.04-40 Cerussite PbCO3 Pmcn 2/m 2/m 2/m

V/B.04-50 Alstonite BaCa(CO3)2 P1 or P1 Tri

V/B.04-60 Barytocalcite BaCa(CO3)2 P 2₁ 2

V/B.04-65 Olekminskite Sr(Sr,Ca,Ba)(CO3)2 P 3₂1 3 2

V/B.04-70 Paralstonite BaCa(CO3)2 P 3₂1 3 2

Other Strontianite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65)

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Print or Cut-and-Paste your Strontianite Specimen Label here :

Strontianite

SrCO3
Dana No: 14.1.3.3 Strunz No: V/B.04-20
Locality:

Notes: