Hi , after having this rock for over 40 years now i suspect its time to get advice on what exactly it is !
It has been in the family since the early 70's now i believe it was found around the High Peak/Derbyshire area
Ive tried to make the images as detailed/clear as possible
ANY help would be great !
Please see attached images:
It looks extraterestial.
It has all the markings of meteorite.
Try putting hydrogen peroxide on it...
If it bubbles it means it contains platinum.
( Platinum being a catalyst and the only rock to react to peroxide.
If you have an accurate scale take the exact dry weight down.
Then put enough water in a container that will completely immerse the rock suspended by a string without touching the sides or back of container.
Now zero out the scale with just the water in the container.
Suspend the rock by string and completely immerse without touching the sides or back or bottom of the container.
Read the scale.
Divide first dry weight of stone by the weight just read.
This will give you the specific gravity of the stone.
Now look online and see what matches your result.
Example: 3.2-3.6 would likely be lonsdaleite. (Impact Diamond)..
Before assuming it is a meteorite (the odds are very much against that but never say no), please work through these three websites and let us know what you conclude:-
(It could be a by-product of the Peak District former mining industry)