Nr. 83879673

Verkocht
Plakje Ureiliet NWA 13135 Achondrite meteoriet - 1.72 g - (1)
Eindbod
€ 9
4 weken geleden

Plakje Ureiliet NWA 13135 Achondrite meteoriet - 1.72 g - (1)

Physical characteristics: Dark-brown individual with well preserved fusion crust. The interior of the meteorite is grayish, with granular texture. Petrography: (P. Yu. Plechov, FMMR). Petrographic observation of a polished section shows that the meteorite is composed of coarse-grained olivine (up to 2 mm) and fine pigeonite (size up to 400 µm). Olivine grains are Fo80.5 and elevated CaO (0.38±0.05 wt.%, n=13) and Cr2O3 (0.78±0.06 wt.%, n=13) abundances. No high-Ca pyroxene or orthopyroxene were observed. Pigeonite has 5.5-6.0 wt.% CaO. Saw-tooth, carbon-rich veins cross the meteorite. Veins or vein fragments with thicknesses of about 50 μm are composed by graphite (without diamond). Thinner veins of about 20 μm thickness contain kamacite with schreibersite rims and troilite-daubreelite intergrowths. Narrower veins, up to 10 μm in thickness, are mostly filled with iron hydroxides. Olivines have reduced rims with very tiny ( µm) drops of iron (without Ni) and more magnesium than the cores (up to Fo87.8). These features are typical for olivine-pigeonite, main group ureilites (monomict ureilites). Irregularly shaped cracks and the absence of other features of impact indicate the sample has a very weak shock stage. Kamacite is partially replaced by iron hydroxides, whereas sulfides and silicates are fresh.

Nr. 83879673

Verkocht
Plakje Ureiliet NWA 13135 Achondrite meteoriet - 1.72 g - (1)

Plakje Ureiliet NWA 13135 Achondrite meteoriet - 1.72 g - (1)

Physical characteristics: Dark-brown individual with well preserved fusion crust. The interior of the meteorite is grayish, with granular texture.

Petrography: (P. Yu. Plechov, FMMR). Petrographic observation of a polished section shows that the meteorite is composed of coarse-grained olivine (up to 2 mm) and fine pigeonite (size up to 400 µm). Olivine grains are Fo80.5 and elevated CaO (0.38±0.05 wt.%, n=13) and Cr2O3 (0.78±0.06 wt.%, n=13) abundances. No high-Ca pyroxene or orthopyroxene were observed. Pigeonite has 5.5-6.0 wt.% CaO. Saw-tooth, carbon-rich veins cross the meteorite. Veins or vein fragments with thicknesses of about 50 μm are composed by graphite (without diamond). Thinner veins of about 20 μm thickness contain kamacite with schreibersite rims and troilite-daubreelite intergrowths. Narrower veins, up to 10 μm in thickness, are mostly filled with iron hydroxides. Olivines have reduced rims with very tiny ( µm) drops of iron (without Ni) and more magnesium than the cores (up to Fo87.8). These features are typical for olivine-pigeonite, main group ureilites (monomict ureilites). Irregularly shaped cracks and the absence of other features of impact indicate the sample has a very weak shock stage. Kamacite is partially replaced by iron hydroxides, whereas sulfides and silicates are fresh.

Stel een zoekopdracht in
Stel een zoekopdracht in om een melding te ontvangen wanneer er nieuwe resultaten zijn.

Dit object was te vinden in

                                        
                                                                                                    
                    
                                        
                                                                                                    
                    
                                        
                                                                                                    
                    

Zo koop je op Catawiki

Meer informatie over onze Kopersbescherming

      1. Ontdek iets bijzonders

      Verken duizenden bijzondere objecten die door experts zijn geselecteerd. Bekijk de foto's, de details en de geschatte waarde van elk bijzonder object. 

      2. Plaats het hoogste bod

      Vind iets waar je van houdt en plaats het hoogste bod. Je kunt de veiling volgen tot het einde of je kunt ons systeem voor je laten bieden. Het enige dat je hoeft te doen, is het maximale bedrag instellen dat je wilt betalen. 

      3. Veilig betalen

      Betaal voor je bijzondere object en we houden de betaling veilig totdat je nieuwe aanwinst veilig is bezorgd. We gebruiken een vertrouwd betalingssysteem om alle transacties af te handelen. 

Wil je iets vergelijkbaars verkopen?

Of je nu nieuw bent met online veilingen of professioneel verkoopt, wij kunnen je helpen meer te verdienen met je bijzondere objecten.

Verkoop je object