AR.
Active member
I agree, the cleavage looks right for calcite.
Geological Pics - Post any interesting photo here
- Thread starter BertyBasset
- Start date
There possibly a sub 90degree angle on a crystal face or two top left, again supporting calcite.
Noticed this 'new' marker a few years ago. Must confuse a lot of non-geologists out for a bimble along the coast
Not so far away is the 'fosssil' of a cats puckered arse
Dredging my memory of first seeing it some 55 years ago I was told it's a fulgurite (hope I have the name correct). Sand that has been turned to glass by a lightning strike.
Good to see the explanation about the river terrace at Hartlakes as I was never happy with the idea it was really avterminal morraine.
Not so far away is the 'fosssil' of a cats puckered arse
Dredging my memory of first seeing it some 55 years ago I was told it's a fulgurite (hope I have the name correct). Sand that has been turned to glass by a lightning strike.
Good to see the explanation about the river terrace at Hartlakes as I was never happy with the idea it was really avterminal morraine.
Jim MacPherson
Member
One of my Dad's photos from the 1970's of the mispickel vein in Carrock Fell, slightly more famous for wolframite. I was advised a few years ago mispickel in German can be construed as something rather unpleasant I think because it had little use.
Jim
Jim
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AR.
Active member
Well, its official name begins with "Arse"...
dougle89
Active member
Due to the shape of it I reckon it's quartz, the colours will be due to the other minerals in the area
Yorkshire Lad
New member
That's a bit more impressive but what means 'real'? I'm not a geologist in any shape or form but in the dim mists of time we were told that the first one Hutton found was the one near Lochranza (adjacent to where that marker stone has now been placed)?
According to https://en.wikipedia.org/wiki/James_Hutton
On the 1787 trip to the Isle of Arran he found his first example of Hutton's Unconformity to the north of Newton Point near Lochranza, but the limited view meant that the condition of the underlying strata was not clear enough for him, and he incorrectly thought that the strata were conformable at a depth below the exposed outcrop.
Later in 1787 Hutton noted what is now known as the Hutton or "Great" Unconformity at Inchbonny,Jedburgh, in layers of sedimentary rock.
So maybe both right!
Chris.
On the 1787 trip to the Isle of Arran he found his first example of Hutton's Unconformity to the north of Newton Point near Lochranza, but the limited view meant that the condition of the underlying strata was not clear enough for him, and he incorrectly thought that the strata were conformable at a depth below the exposed outcrop.
Later in 1787 Hutton noted what is now known as the Hutton or "Great" Unconformity at Inchbonny,Jedburgh, in layers of sedimentary rock.
So maybe both right!
Chris.
Tangent_Tracker
Member
Yorkshire Lad
New member
Sorry, ment to ask if this is quartz?
dougle89
Active member
Has more of a calcite shape to it. Was the rest of the ground limestone where it was found?
dougle89
Active member
Or if it fizzes in vinegar too
Yorkshire Lad
New member
It was in a stream, Yoredale Series of rocks.
