#sphene — Public Fediverse posts

AlexStrekeisen.it (run by Alessandro Da Mommio) has some beautiful thin section images of titanite:

https://www.alexstrekeisen.it/english/pluto/titanite.php

#MinCup25 #ThinSectionThursday #Titanite #Sphene #Granite #Mineralogy

Repost from last year:
I've seen sphene! (Sounds better than "the rock is tippsy with titanite")

Centimeter-size black sphene (titanite) with apatite (dark brown) and orthoclase feldspar (light brown). Folding pocket knife for scale.

From the Bancroft locality in Ontario, Canada. Grenville-aged (~1.2± billion years)

#MinCup25 #Titanite #Sphene #Bancroft #Ontario #Geology #Grenville

A titanite lozenge imaged both using a cellphone through the microscope ocular, and with a proper imaging system. It's surrounded mostly by quartz (+feldspar).

Likely from the Grenville, but from a teaching collection two generations of retired professors ago.

#MinCup24 #Titanite #Sphene

I've seen sphene! (Sounds better than "the rock is tight with titanite")

Centimeter-size black sphene (titanite) with apatite (dark brown) and orthoclase feldspar (light brown). Folding pocket knife for scale.

From the Bancroft locality in Ontario, Canada. Grenville-aged (~1.2± billion years)
#MinCup24 #Titanite #Sphene #Bancroft #Ontario #Geology