ies} Mineral Data

General ies} Information

Locality:

Link to MinDat.org Location Data.

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ies} Crystallography

Axial Ratios:

a:b:c =0.4507:1:0.8289

Axial Ratios:

a:b:c =0.4713:1:0.4042

Axial Ratios:

a:b:c =0.4721:1:0.4054

Axial Ratios:

a:b:c =0.4724:1:0.4025

Axial Ratios:

a:b:c =0.7284:1:0.408

Axial Ratios:

a:b:c =0.91:1:0.4546

Cell Dimensions:

a = 11.03, b = 12.12, c = 5.51, Z = 2; beta = 114.083° V = 672.48 Den(Calc)= 3.94

Cell Dimensions:

a = 5.25, b = 11.647, c = 9.655, Z = 2; beta = 95.94° V = 587.20 Den(Calc)= 2.79

Cell Dimensions:

a = 5.67, b = 12.01, c = 4.869, Z = 2; V = 331.56 Den(Calc)= 4.42

Cell Dimensions:

a = 5.67, b = 12.03, c = 4.863, Z = 2; V = 331.71 Den(Calc)= 4.57

Cell Dimensions:

a = 5.726, b = 12.12, c = 4.879, Z = 2; V = 338.60 Den(Calc)= 4.50

Cell Dimensions:

a = 9.55, b = 13.11, c = 5.35, Z = 4; V = 669.82 Den(Calc)= 3.69

Physical Properties of ies}

Cleavage:

None

Cleavage:

None

Cleavage:

None

Cleavage:

None

Cleavage:

None

Cleavage:

{???} Good

Density:

3.78

Density:

3.83

Density:

4.15

Density:

4.45

Density:

4.49

Diaphaniety:

Subtranslucent

Diaphaniety:

Subtranslucent

Diaphaniety:

Subtranslucent

Diaphaniety:

Translucent

Diaphaniety:

Transparent

Diaphaniety:

Transparent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Fracture:

Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Habit:

Inclusions - Generally found as inclusions in other minerals.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Habit:

Selvage - As a reaction rim, surrounding the host mineral.

Habit:

Tabular - Form dimensions are thin in one direction.

Habit:

Twinning Common - Crystals are usually twinned.

Habit:

Twinning Common - Crystals are usually twinned.

Hardness:

3-4 - Calcite-Fluorite

Hardness:

3-4 - Calcite-Fluorite

Hardness:

4 - Fluorite

Hardness:

4.5 - Between Fluorite and Apatite

Hardness:

4.5 - Between Fluorite and Apatite

Luster:

Pearly

Luster:

Vitreous (Glassy)

Luster:

Vitreous - Dull

Luster:

Vitreous - Greasy

Luster:

Vitreous - Greasy

Luster:

Vitreous - Greasy

Streak:

brownish white

Streak:

light brown

Streak:

light brown

Streak:

white

Optical Properties of ies}

Optical Data:

Biaxial (+), a=1.766, b=1.773, g=1.788, bire=0.0220, 2V(Calc)=70, 2V(Meas)=69. Dispersion r > v slight.

Biaxial (+), a=1.774, b=1.782, g=1.798, bire=0.0240, 2V(Calc)=72, 2V(Meas)=69. Dispersion r < v weak.

Biaxial (+), a=1.777, b=1.788, g=1.8, bire=0.0230

Biaxial (+), a=1.783, b=1.801, g=1.834, bire=0.0510

Biaxial (-), a=1.5945, b=1.6069, g=1.6088, bire=0.0143, 2V(Calc)=42, 2V(Meas)=45.6. Dispersion r > v strong.

Biaxial (-), a=1.755, b=1.772, g=1.774, bire=0.0190, 2V(Calc)=36, 2V(Meas)=0.

Pleochroism (x):

colorless or orange-yellow.

weak.

yellow.

Pleochroism (y):

reddish brown.

weak.

yellowish brown or dark brown.

Pleochroism (z):

brown.

reddish brown or crimson.

weak.

Other ies} Information

References:

NAME( AmMin, 86:1536) PHYS. PROP.(AmMin, 86:1536) OPTIC PROP.(AmMin, 86:1536)

NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

See Also:

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