General Safflorite Information
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Chemical Formula: |
(Co,Fe)As2 |
Composition: |
Molecular Weight = 208.00 gm |
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Iron 6.71 % Fe |
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Cobalt 21.25 % Co |
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Arsenic 72.04 % As |
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100.00 % |
Empirical Formula: |
Co0.75Fe2+0.25As2 |
Environment: |
Hydrothermal veins of moderate temperature and presssure. |
IMA Status: |
Valid Species (Pre-IMA) 1835 |
Locality: |
Schneeberg District, Erzgebirge, Saxony, GermanySchneeberg District, Erzgebirge, Saxony, Germany. Link to MinDat.org Location Data. |
Name Origin: |
From the German Safflor - "dyer's saffron." |
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Safflorite Image |
Images:
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Safflorite
Comments: Safflorite covering three faces of the specimen, with silver.
Location: Castle Mine (Castle-Tretheway Mine), Gowganda, Haultain Township, Timiskaming District, Ontario, Canada.
Scale: 7x 3x 3.5 cm.
© Ibrahim Jameel / Khyber Mineral Company |
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Safflorite Crystallography
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Axial Ratios: |
a:b:c =0.8688:1:0.5036 |
Cell Dimensions: |
a = 5.173, b = 5.954, c = 2.999, Z = 2; V = 92.37 Den(Calc)= 7.48 |
Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnnm |
X Ray Diffraction: |
By Intensity(I/Io): 2.379(1), 2.572(0.8), 2.597(0.55), |
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Physical Properties of Safflorite
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Cleavage: |
[010] Imperfect |
Color: |
Gray, Dark gray, Tin white. |
Density: |
6.9 - 7.3, Average = 7.1 |
Diaphaniety: |
Opaque |
Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
Habit: |
Massive - Granular - Common texture observed in granite and other igneous rock. |
Habit: |
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) |
Hardness: |
4-5 - Fluorite-Apatite |
Luminescence: |
None. |
Luster: |
Metallic |
Magnetism: |
Nonmagnetic |
Streak: |
grayish black |
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Optical Properties of Safflorite
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RL Anisotrophism: |
Strong. |
RL Color: |
White. |
RL Pleochroism: |
Weak. |
Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Safflorite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
55.80 |
52.60 |

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| 420 nm |
55.80 |
53.00 |

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| 440 nm |
55.80 |
53.40 |

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| 460 nm |
55.60 |
53.80 |

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| 480 nm |
55.20 |
54.10 |

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| 500 nm |
54.70 |
54.30 |

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| 520 nm |
54.20 |
54.40 |

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| 540 nm |
53.50 |
54.50 |

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| 560 nm |
52.80 |
54.50 |

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| 580 nm |
52.20 |
54.50 |

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| 600 nm |
51.80 |
54.40 |

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| 620 nm |
51.30 |
54.30 |

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| 640 nm |
51.00 |
54.20 |

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| 660 nm |
50.70 |
54.10 |

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| 680 nm |
50.50 |
53.90 |

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| 700 nm |
50.30 |
53.80 |

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Calculated Relative Intensity Colors of Safflorite in Air
Relative Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
170% |
| R1 |
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| R2 |
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Calculated Properties of Safflorite
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Electron Density: |
relectron=6.67 gm/cc note: rSafflorite =7.48 gm/cc. |
Fermion Index |
Fermion Index = 0.00142 Boson Index = 0.99858 |
Photoelectric: |
PESafflorite = 62.03 barns/electron U=PESafflorite x relectron= 413.81 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Safflorite is Not Radioactive |
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Safflorite Classification
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Dana Class: |
2.12.2.11 (2)Sulfides - Including Selenides and Tellurides |
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(2.12)where Am Bn Xp, with (m+n):p=1:2 |
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(2.12.2)Marcasite Group (Orthorhombic: Pnnm) |
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2.12.2.1 Marcasite FeS2 Pnnm 2/m 2/m 2/m |
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2.12.2.2 Ferroselite FeSe2 Pnnm 2/m 2/m 2/m |
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2.12.2.3 Frohbergite FeTe2 Pnnm 2/m 2/m 2/m |
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2.12.2.4 Hastite CoSe2 Pnnm 2/m 2/m 2/m |
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2.12.2.5 Mattagamite CoTe2 Pnnm 2/m 2/m 2/m |
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2.12.2.6 Kullerudite NiSe2 Pnnm 2/m 2/m 2/m |
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2.12.2.7 Omeiite (Os,Ru)As2 Pnnm 2/m 2/m 2/m |
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2.12.2.8 Anduoite (Ru,Os)As2 Pnnm 2/m 2/m 2/m |
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2.12.2.9 Lollingite FeAs2 Pnnm 2/m 2/m 2/m |
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2.12.2.10 Seinajokite (Fe,Ni)(Sb,As)2 Pnnm 2/m 2/m 2/m |
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2.12.2.11 Safflorite (Co,Fe)As2 Pnnm 2/m 2/m 2/m |
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2.12.2.12 Rammelsbergite NiAs2 Pnnm 2/m 2/m 2/m |
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2.12.2.13 Nisbite NiSb2 Pnnm 2/m 2/m 2/m |
Strunz Class: |
II/D.23-20 II - Sulfides and sulphosalts |
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II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold |
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II/D.23 - Löllingite - Costibite series |
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II/D.23-10 Lollingite FeAs2 Pnnm 2/m 2/m 2/m |
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II/D.23-20 Safflorite (Co,Fe)As2 Pnnm 2/m 2/m 2/m |
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II/D.23-30 Rammelsbergite NiAs2 Pnnm 2/m 2/m 2/m |
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II/D.23-40 Seinajokite (Fe,Ni)(Sb,As)2 Pnnm 2/m 2/m 2/m |
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II/D.23-50 Nisbite NiSb2 Pnnm 2/m 2/m 2/m |
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II/D.23-60 Costibite CoSbS P mn21 mm2 |
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II/D.23-70 Oenite! CoSbAs Unk Ortho |
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Other Safflorite Information
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References: |
NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
See Also: |
Links to other databases for Safflorite :
1 -Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Applied Mineralogy
4 -Athena
5 - Crocoite.com Mineral Locations
6 - EUROmin Project
7 - Franklin Minerals(Dunn)
8 -Google Images
9 -Google Scholar
10 - HyperPhysics
11 -MinDAT
12 -MinMax(Deutsch)
13 -MinMax(English)
14 -Mineralienatlas (Deutsch)
15 - Minerals of Wisconsin
16 -QUT Mineral Atlas
17 - WWW-MINCRYST
18 -École des Mines de Paris
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Print or Cut-and-Paste your Safflorite Specimen Label here :
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Safflorite
(Co,Fe)As2
Dana No: 2.12.2.11 Strunz No: II/D.23-20
Locality:
Notes:
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