| Chestermanite Mineral Data |
General Chestermanite Information |
|||
| Mg2(Fe+++,Mg,Al,Sb+++++)BO3O2 | |||
| Molecular Weight = 192.66 gm | |||
| Magnesium 27.75 % Mg 46.02 % MgO | |||
| Aluminum 1.40 % Al 2.65 % Al2O3 | |||
| Iron 17.39 % Fe 24.87 % Fe2O3 | |||
| Boron 5.61 % B 18.07 % B2O3 | |||
| Antimony 6.32 % Sb 8.40 % Sb2O5 | |||
| Oxygen 41.52 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Mg2Fe3+0.6Mg0.2Al0.1Sb0.1BO5 | |||
| Approved IMA 1988 | |||
| Twin Lakes region, Fresno County, California, USA. Link to MinDat.org Location Data. | |||
| Named for Charles W. Chesterman (1913-1991), U. S. Geologist who discovered the mineral. | |||
| ICSD 71036 | |||
| PDF 45-1415 | |||
Chestermanite Image | |||
|
|
|
||
Chestermanite Crystallography |
|||
| a:b:c =1.5095:1:0.2462 | |||
| a = 18.525, b = 12.272, c = 3.0218, Z = 8; V = 686.97 Den(Calc)= 3.73 | |||
| Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pbam | |||
| By Intensity(I/Io): 5.114(1), 2.559(0.91), 2.169(0.57), | |||
Physical Properties of Chestermanite |
|||
| None | |||
| Gray green, Black, Black green. | |||
| 3.72 | |||
| Transparent | |||
| Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | |||
| 6 - Orthoclase | |||
| Vitreous - Silky | |||
| light gray green | |||
Optical Properties of Chestermanite |
|||
| CI meas= 0.092 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= 0.094 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2062,KPDmeas= 0.2067,KC= 0.2275 |
|||
| Biaxial (+), a=1.753, b=1.763, g=1.791, bire=0.0380, 2V(Calc)=64, 2V(Meas)=63. | |||
| dark blue green. | |||
| green. | |||
| pale yellow brown. | |||
Calculated Properties of Chestermanite |
|||
relectron=3.61 gm/cc |
|||
| Fermion Index = 0.0428 Boson Index = 0.9572 |
|||
PEChestermanite = 25.12 barns/electron |
|||
| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Chestermanite is Not Radioactive |
|||
Chestermanite Classification |
|||
| 24.2.1.5 (24)Borates - Anhydrous | |||
| (24.2)where (A)2 BO2 [XO3] | |||
| (24.2.1)Ludwigite Group (Space Group: Pbam) | |||
| V/G.04-40 V - Nitrates, Carbonates and Borates | |||
| V/G - "Insel" borates [BO3]3- "inseln" | |||
| V/G.04 - Ludwigite group | |||
Other Chestermanite Information |
|||
| NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.75,p431,1990) OPTIC PROP.(Dana8) | |||
| Links to other databases for Chestermanite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris Search for Chestermanite using: Visit our Advertisers for Chestermanite : Translate Chestermanite Mineral Data : Ask about Chestermanite here : Print or Cut-and-Paste your Chestermanite Specimen Label here :
|
|||