Most typical axes of this type are made of diabase or basalt, found in many places in Sweden. But the ones Im going to examine (with thin sections and so on) are made of dacite, a dacite not found here. So if theres anyone out there with knowledge of European dacite locations, please let me know.

One typical battle axe, made of diabase (I think - the white spots seems to be dusty/eroded dents and cavities, difficult to say for sure). And no, of course we dont do thin sections of nice whole samples like this, but rather of broken up parts.

I just recently came back from a week long trip to the province of Blekinge here in Sweden. Its an awsome province with beautiful deep forests and I can recommend a trip to it to anyone who loves nature. But be sure to bring something against mosquitos and ticks. The humid climate near the Baltic sea makes it a paradise for ticks.

It was a course in making maps of the bedrock, the petrology and structures. Mostly we found intrusive granites and more or less gneiss and granite-gneiss with pegmatite intrusions - the most common types of bedrock in here south east of Sweden. But one unusual loose rock caught our attention.

The theory my professor gave us was that it probably was a piece of diabas with (from the intrusion loosened) megacrysts of pegmatites in it (microcline and red quartz). The area is rich in pegmatites and diabase intrusions so the theory of origin made sence, however he had never seen anything like it before and had to base this on a qualified assumption. I presume its an unusal find or has someone found anything similar? No, its not my finger…

Just wondering if I still have any followers to the blog? I was thinking about starting up the blog with topics on Swedish geology for the summer. Mostly because of the severe drought in the Swedish bloggosphere during the summer time.

Let me know if Im still visible in the geoblog community!

As you can se from the images its some sort of sedimentary rock. It basically looks like some form of clay (or silt) stone with stripes of quarts sand in it and rich in Iron (but that could of course be something it was exposed to simply). I havent actually weighed it, but it feels quite heavy, perhaps because of the iron?. The larger granule/grain in the middle is also quartz as far as I can tell.

Update: Added two more closeups. 

All happening along the Tornqvist-zone. The ancient fault line zone streching through my home province Skåne (Scania). Ive written som more about in in my Swedish geoblog.

More info