Bolivarite Mineral Data

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.

Name Pronunciation:

Bolivarite + Pronunciation

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

Diaphaneity:

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
Ncalc = 1.5 - 1.52

Optical Data:

Isotropic, n=1.5-1.51.

Calculated Properties of Bolivarite

Electron Density:

Bulk Density (Electron Density)=2.07 gm/cc
note: Specific Gravity of Bolivarite =2.01 gm/cc.

Fermion Index:

Fermion Index = 0.000320722
Boson Index = 0.999679278

Photoelectric:

PE_Bolivarite= 1.18 barns/electron
U=PE_Bolivarite x rElectron Density= 2.46 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bolivarite is Not Radioactive

Bolivarite Classification

Dana Class:

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

(42.06)where (AB)2 (XO4) Zq · x(H2O)

(42.06.08)Dana Group

42.06.08.01 Bolivarite Al2(PO4)(OH)3•4-5(H2O) None

Strunz Class:

08.DF.10 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DF -With only medium-sized cations, (OH,etc.):RO4 > 3:1

08.DF.10 Bolivarite Al2(PO4)(OH)3•4-5(H2O) None

08.DF.10 Evansite Al3(PO4)(OH)6•6(H2O)(?) None

08.DF.10 Liskeardite (Al,Fe)3(AsO4)(OH)6•5(H2O) Unk Ortho

08.DF.10 Rosieresite (Pb,Cu,Al)(PO4)x•n(H2O) None

Other Bolivarite Information

References:

NAME( Dana8) PHYS. PROP.(Dana;Enc. of Minerals,2nd ed.,1990) 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 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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

Bolivarite

Al2(PO4)(OH)3•4-5(H2O)
Dana No: 42.06.08.01 Strunz No: 08.DF.10
Locality:

Notes: