General Jensenite Information
|
Chemical Formula: |
Cu++3Te++++++O6·2(H2O) |
Composition: |
Molecular Weight = 450.26 gm |
| |
Copper 42.34 % Cu 53.00 % CuO |
| |
Tellurium 28.34 % Te 35.45 % TeO2 |
| |
Hydrogen 0.90 % H 8.00 % H2O |
| |
Oxygen 28.43 % O |
| |
______ ______ |
| |
100.00 % 96.45 % = TOTAL OXIDE |
Empirical Formula: |
Cu3(TeO6)·2(H2O) |
Environment: |
Secondary alteration of Cu and Te ore minerals. |
IMA Status: |
Approved IMA 1996 |
Locality: |
The dumps of the Centennial Eureka mine, Tintic district, Juab County, Utah, USA. Link to MinDat.org Location Data. |
Name Origin: |
For Mr. Matin C. Jensen (1959-), who first collected and recognized this mineral as a potentially new species. |
Synonym: |
ICSD 82481 |
| |
IMA1994-043 |
| |
PDF 49-1874 |
| |
Jensenite Image |
Images:
|
|
Jensenite
Comments: Small green crystals of jensenite in matrix.
Location: Centennial Eureka Mine, Tintic District, Juab Co., Utah, USA.
Scale: Picture size 1.2 mm.
© Thomas Witzke / Abraxas-Verlag |
|
Jensenite Crystallography
|
Axial Ratios: |
a:b:c =1.0037:1:0.827 |
Cell Dimensions: |
a = 9.204, b = 9.17, c = 7.584, Z = 4; beta = 102° V = 626.11 Den(Calc)= 4.78 |
Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/n |
X Ray Diffraction: |
By Intensity(I/Io): 6.428(1), 3.217(0.7), 2.6(0.6), |
Crystal Structure:
Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above
|
|
|
Grice J D , Groat L A , Roberts A C , The Canadian Mineralogist , 34 (1996) p.55-59, Jensenite, a cupric tellurate framework structure with two coordinations of, copper
|
|
| |
Physical Properties of Jensenite
|
Cleavage: |
[101] Fair |
Color: |
Emerald green. |
Density: |
4.76 |
Diaphaniety: |
Transparent |
Fracture: |
Brittle - Uneven - Very brittle fracture producing uneven fragments. |
Habit: |
Cryptocrystalline - Occurs as crystals too small to distinguish with the naked eye. |
Habit: |
Pseudo Rhombohedral - Crystals show a rhombohedral outline. |
Habit: |
Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape. |
Hardness: |
3-4 - Calcite-Fluorite |
Luminescence: |
Non-fluorescent. |
Luster: |
Adamantine |
Streak: |
emerald green |
| |
Optical Properties of Jensenite
|
Gladstone-Dale: |
CI meas= -0.025 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.021 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1925,KPDmeas= 0.1933,KC= 0.1886 |
Optical Data: |
Biaxial (?), a=1.92 |
RL Bireflectance: |
Weak. |
RL Color: |
Gray with bright green internal reflections at grain boundaries. |
Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Jensenite in Air
| λ |
R1 |
R2 |
 |
∑ R1(λ) |
∑ R2(λ) |
| 420 nm |
11.00 |
11.30 |

 |
|
|
| 440 nm |
10.80 |
11.20 |

 |
| 460 nm |
10.70 |
11.10 |

 |
| 480 nm |
10.70 |
11.00 |

 |
| 500 nm |
10.70 |
10.80 |

 |
| 520 nm |
10.60 |
10.70 |

 |
| 540 nm |
10.40 |
10.50 |

 |
| 560 nm |
10.15 |
10.30 |

 |
| 580 nm |
9.90 |
10.00 |

 |
| 600 nm |
9.60 |
9.80 |

 |
| 620 nm |
9.40 |
9.60 |

 |
| 640 nm |
9.25 |
9.40 |

 |
| 660 nm |
9.15 |
9.30 |

 |
| 680 nm |
9.00 |
9.20 |

 |
| 700 nm |
9.10 |
9.20 |

 |
Calculated Relative Intensity Colors of Jensenite in Air
Relative Intensity |
0% |
100% |
200% |
300% |
400% |
500% |
600% |
700% |
800% |
900% |
920% |
| R1 |
|
|
|
|
|
|
|
|
|
|
|
| R2 |
|
|
|
|
|
|
|
|
|
|
|
|
| |
Calculated Properties of Jensenite
|
Electron Density: |
relectron=4.40 gm/cc note: rJensenite =4.78 gm/cc. |
Fermion Index |
Fermion Index = 0.02278 Boson Index = 0.97722 |
Photoelectric: |
PEJensenite = 114.00 barns/electron U=PEJensenite x relectron= 501.01 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Jensenite is Not Radioactive |
| |
Jensenite Classification
|
Dana Class: |
33.2.6.1 (33)Selenates and Tellurates |
| |
(33.2)as A+ (B++)m XO6 Zq · x(H2O) where x can equal 0 |
| |
(33.2.6)Dana Group |
| |
33.2.6.1 Jensenite Cu3TeO6·2(H2O) P 21/n 2/m |
Strunz Class: |
IV/K.15-16 IV - Oxides |
| |
IV/K - Complex Tellurides with [TeO6]6-, [TeO3]2- and [TeO4]2- groups |
| |
IV/K.15 - Yafsoanite - Cuzticite series |
| |
IV/K.15-10 Frankhawthorneite Cu2TeO4(OH)2 P 21/n 2/m |
| |
IV/K.15-12 Xocomecatlite Cu3TeO4(OH)4 Unk Ortho |
| |
IV/K.15-15 Mcalpineite Cu3TeO6·(H2O) Unk Cubic |
| |
IV/K.15-16 Jensenite Cu3TeO6·2(H2O) P 21/n 2/m |
| |
IV/K.15-18 Leisingite! Cu(Mg,Cu,Fe,Zn)2TeO6·6(H2O) P 31m 3 2/m |
| |
IV/K.15-19 Utahite! Cu5Zn3(TeO4)4(OH)8·7(H2O) P1 or P1 Tri |
| |
IV/K.15-20 Cuzticite Fe2TeO6·3(H2O) Unk Hex |
| |
IV/K.15-30 Yafsoanite Ca3Te2Zn3O12 I a3d 4/m 3 2/m |
| |
IV/K.15-40 Khinite PbCu3TeO6(OH)2 F ddd 2/m 2/m 2/m |
| |
IV/K.15-50 Parakhinite Cu3PbTeO4(OH)6 P 6222 or P 6422 6 2 2 |
| |
IV/K.15-60 Montanite Bi2TeO6·2(H2O) Mono |
| |
Other Jensenite Information
|
References: |
NAME( MinRec) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(AntBidBlaNic5) |
See Also: |
Links to other databases for Jensenite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 -Google Images
4 -Google Scholar
5 -Handbook of Mineralogy (UofA)
6 -MinDAT
7 -MinMax(Deutsch)
8 -MinMax(English)
9 -Mineralienatlas (Deutsch)
10 -QUT Mineral Atlas
Search for Jensenite using:
[ALTAVISTA]
[AOL]
[About.com]
[All-The-Web]
[HotBot]
[Ixquick]
[LookSmart]
[MAMMA]
[MSN.COM]
[Netscape]
[Teoma]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Jensenite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop
Translate Jensenite Mineral Data :
Ask about Jensenite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
Espaņol
Print or Cut-and-Paste your Jensenite Specimen Label here :
|
Jensenite
Cu++3Te++++++O6·2(H2O)
Dana No: 33.2.6.1 Strunz No: IV/K.15-16
Locality:
Notes:
|
|
| |
| |
|
| |