Ginorite Mineral Data

General Ginorite Information

Chemical Formula:

Ca2B14O23•8(H2O)

Composition:

Molecular Weight = 743.60 gm

Calcium 10.78 % Ca 15.08 % CaO

Boron 20.35 % B 65.54 % B₂O₃

Hydrogen 2.17 % H 19.38 % H₂O

Oxygen 66.70 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca₂B₁₄O₂₃•8(H₂O)

Environment:

Veins in sandstone (Sasso Pisano, Italy). Efflorescences on weathered basalt associated with colemanite-bearing limestone (Death Valley, California, USA);

IMA Status:

Valid Species (Pre-IMA) 1934

Locality:

Sasso Pisano, eight km south of Lardarello, Tuscany, Italy. Link to MinDat.org Location Data.

Name Origin:

Named for Prince Piero Ginori Conti (1865-1939), Florence, Italy, for his contributions to the Tuscan borax industry.

Name Pronunciation:

Ginorite

Ginorite Image

Images:

Ginorite Priceite

Comments: Clear platy crystalline coatings of ginorite on rock with white priceite.
Location: Corkscrew Canyon, Death Valley, Inyo County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ginorite Crystallography

Axial Ratios:

a:b:c =0.9308:1:0.8533

Cell Dimensions:

a = 13.375, b = 14.368, c = 12.261, Z = 4; beta = 101.2° V = 2,311.35 Den(Calc)= 2.14

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 7.14(1), 5.36(0.3), 3.27(0.2),

Physical Properties of Ginorite

Cleavage:

{010} Indistinct

Color:

White.

Density:

2.07 - 2.09, Average = 2.08

Diaphaneity:

Transparent to Translucent

Hardness:

3.5 - Copper Penny

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Ginorite

Gladstone-Dale:

CI meas= -0.087 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.057 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.252,KPDmeas= 0.2593,KC= 0.2385
Ncalc = 1.49 - 1.51

Optical Data:

Biaxial (+), a=1.517, b=1.524, g=1.577, bire=0.0600, 2V(Calc)=42, 2V(Meas)=42.

Calculated Properties of Ginorite

Electron Density:

Bulk Density (Electron Density)=2.15 gm/cc
note: Specific Gravity of Ginorite =2.14 gm/cc.

Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Photoelectric:

PE_Ginorite= 1.60 barns/electron
U=PE_Ginorite x rElectron Density= 3.45 barns/cc.

Radioactivity:

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

Ginorite Classification

Dana Class:

26.06.07.01 (26)Hydrated Borates Containing Hydroxyl or Halogen

(26.06)Dana Type

(26.06.07)Dana Group

26.06.07.01 Ginorite Ca2B14O23•8(H2O) P 2₁/c 2/m

26.06.07.02 Strontioginorite (Sr,Ca)2B14O23•8(H2O) P 2₁/a 2/m

Strunz Class:

06.FC.15 06 - BORATES

06.F - Hexaborates

06.FC -Phyllo-hexaborates

06.FC.15 Ginorite Ca2B14O23•8(H2O) P 2₁/c 2/m

06.FC.15 Strontioginorite (Sr,Ca)2B14O23•8(H2O) P 2₁/a 2/m

Other Ginorite Information

References:

NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Ginorite :
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 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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

Ginorite

Ca2B14O23•8(H2O)
Dana No: 26.06.07.01 Strunz No: 06.FC.15
Locality:

Notes:

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