Iron Meteorite inclusion.

Troilite FeS inclusion, with pure Fe surface in combination with Al. Nice specimen very rare, possibel not seen before, surface with new mineral FeAl. In close the surface, also shows a crystal pattern similar to oxtahedrit pattern.

Here it wuld be normal to mension, a geologist princip rule 1. from 1669 named Stenos (Danish). If a solid mass sourrond a smaller mass, the smaller mass have, on the surface, evidence of what the sourrounding mass is, on it surface. Princip 1. Therefore this have been a inclusion in a iron meteorite.

Electron image of the Nodule from above, with Fe and Al. The surface Aluminium, made it possible fore this Troilit Nodule to survive any influence from the inviroment, like Oxygen contact with Sulfer, and H2O in contact with Fe. The surface detecded abnormalies, is from the cooling sequence where the elements have time, to seek into the surface. Because of the ppm values in kamacite, and the excluding Nickel variations from the kamacite, also the ppm values have time to move, depending on the cooling time (segretion, eutectic, proeutectic dendritic crystal growth, Vang Buchwald).

 

Compound

O

Al

Si

P

Fe

Sample _pt1

26.17

2.23

0.88

0.26

70.46

Sample _pt2

 

4.83

 

 

95.17

Sample _pt3

 

7.65

 

 

92.35

Sample_pt4

 

7.48

 

 

92.52

Here it is, Wow New elements combination, probe from the surface of the mineral, in a electron microscope from the Geology Institute Geus University of Copenhagen.

The electron microprobe is then compared with the mineralogy mineral databases on the internet, like this one from:http://webmineral.com/chemical.shtml#.V1auAI9OK1t

100.00%Fe Iron  ! Fe 55.85
90.88%Fe Siderazot   Fe5N2 307.25
89.54%Fe Kamacite  ? alpha-(Fe,Ni) 56.13
89.18%Fe Roaldite   (Fe,Ni)4N 237.96
88.96%Fe Chromferide   Fe3Cr1-x(x=0,6) 188.34
85.64%Fe Gupeiite   Fe3Si 195.63
81.82%Fe Haxonite   (Fe,Ni)23C6

 The mineraldata site, provides data of all minerals. Clik on the elements any element is this case iron Fe, and it shows have many minerals containing Fe, and there composition. In numeric content at the left side, and the combination with other elements.

 

 

 

 

 

 

The cut plane surface picture, clearly shows cirkular masses in 2 different yellowed colors, bound the the cosmogenic sulfur isotope 33, 36. The surface also shows the fingerprint chok veins, from the center towords the surface, 2 end points have a parrallel crack to the surface.

This item have been protected from the corrosive Earth eviroment, by the Aluminium content in the surface. Therefore it have significant scientific value, because if have never been in contact with Oxygen. Also the surface mineral is not been registrered before, the cosmogenic istotope and the atomic bonding strengt between the FeS atomic arrangement, is broken ind the bonding strengt, in the shock veins, pointed towards the impact direction. The part of the Nodule that is pointed down, is recrystaliced, to equiaxial FeS grains. The upper part, is not.