Bolivarite Mineral Data

Bolivarite Mineral Data +

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General Bolivarite Information

Chemical Formula:

Al2(PO4)(OH)3·4-5(H2O)

Composition:

Molecular Weight = 281.03 gm

Aluminum 19.20 % Al 36.28 % Al₂O₃

Phosphorus 11.02 % P 25.25 % P₂O₅

Hydrogen 4.30 % H 38.46 % H₂O

Oxygen 65.47 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Al₂(PO₄)(OH)₃·4.5(H₂O)

Environment:

Found in crevices in granite. May be equivalent to evensite or varisite.

IMA Status:

Valid Species (Pre-IMA) 1921

Locality:

Pontevedra, Spain. Link to MinDat.org Location Data.

Name Origin:

Named for Ignacio Boivar Y Urrutia (1850-?), Spanish entomologist.

Bolivarite Image

Images:

Bolivarite

Comments: Yellow translucent mass of bolivarite.
Location: Pontevedra, Galicia, Spain. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Bolivarite Crystallography

Crystal System:

Amorphous- No Crystals

Physical Properties of Bolivarite

Cleavage:

None

Color:

Greenish white, Yellow green.

Density:

1.97 - 2.05, Average = 2

Diaphaniety:

Translucent

Fracture:

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

Hardness:

2.5-3.5 - Finger Nail-Copper Penny

Luminescence:

Fluorescent, Short UV=bright green.

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Bolivarite

Gladstone-Dale:

CI meas= 0.003 (Superior) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2512,KC= 0.2521

Optical Data:

Isotropic, n=1.5-1.51.

Calculated Properties of Bolivarite

Electron Density:

r_electron=2.07 gm/cc
note: r_Bolivarite=2.01 gm/cc.

Fermion Index

Fermion Index = 0.00032
Boson Index = 0.99968

Photoelectric:

PE_Bolivarite= 1.18 barns/electron
U=PE_Bolivarite x r_electron= 2.46 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Bolivarite is Not Radioactive

Bolivarite Classification

Dana Class:

42.6.8.1 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.6)where (AB)2 (XO4) Zq · x(H2O)

(42.6.8)Dana Group

42.6.8.1 Bolivarite Al2(PO4)(OH)3·4-5(H2O) None

Strunz Class:

VII/D.55-05 VII - Phosphates, Arsenates and Vanadates

VII/D - Water-bearing phosphates with unfamiliar anions, cations of very big and medium size: Al, Mg and Ca, Na, K

VII/D.55 - Bolivarite - Delvauxite series

VII/D.55-05 Bolivarite Al2(PO4)(OH)3·4-5(H2O) None

VII/D.55-10 Delvauxite CaFe4(PO4,SO4)2(OH)8·4-6(H2O)(?) None

Other Bolivarite Information

References:

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

See Also:

Links to other databases for Bolivarite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 -École des Mines de Paris

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

Bolivarite

Al2(PO4)(OH)3·4-5(H2O)
Dana No: 42.6.8.1 Strunz No: VII/D.55-05
Locality:

Notes: