The sparky rock thread
- Thread starter halo2
- Start date
My granddaughter’ sparky rock collection as she calls it lol. She’s five. She has been picking no up rocks since she could walk. There everywhere in my house. 
hello,
@I am Daywalker me thinks it's time your granddaughter was introduced to F&S (under supervision of course) & the BCUSA Clubhouse Young Roughians.
Regards
David
Last edited:
hello,
@Sambo I keep meaning to ask, have you ever come across Milky chert within your AO? I founds some a long time ago, & I traded for a few nodules with a Bushcrafter a few years ago from Yorkshire, I think it was harvested around the northern Yorkshire Dales and the eastern Yorkshire Wolds. The chert is a milky white colour which the dark chert resembles broken pieces of Thornton's toffee. I wouldn't try chewing onnit but it does shew sparks.
Regards
David
@Sambo I keep meaning to ask, have you ever come across Milky chert within your AO? I founds some a long time ago, & I traded for a few nodules with a Bushcrafter a few years ago from Yorkshire, I think it was harvested around the northern Yorkshire Dales and the eastern Yorkshire Wolds. The chert is a milky white colour which the dark chert resembles broken pieces of Thornton's toffee. I wouldn't try chewing onnit but it does shew sparks.
Regards
David
Sorry David I haven't but now you "sparked" my interest and I will investigate more to get some, I am curios to see how good it can be , some of my neighbors used to work the local mines i am sure they know were if any local to South Yorkshire if not I will have to take a trip to the northhello,
@Sambo I keep meaning to ask, have you ever come across Milky chert within your AO? I founds some a long time ago, & I traded for a few nodules with a Bushcrafter a few years ago from Yorkshire, I think it was harvested around the northern Yorkshire Dales and the eastern Yorkshire Wolds. The chert is a milky white colour which the dark chert resembles broken pieces of Thornton's toffee. I wouldn't try chewing onnit but it does shew sparks.
Regards
David
This what I discovered about in my area
Chert is generally understood to be of inferior quality to flint for
knapping, though dark, fine-grained chert from the Bakewell area of the
Peak District knaps considerably better than some of the coarse, white
Wolds flint of North Yorkshire. Generally, however, the way in which it
fractures is less predictable than flint and tends to be angular rather
than conchoidal. Differences in evidence of core reduction demonstrate
a response to this problem: chert seems most often to have been
knapped using the weathered surface (which had interfaced with the
limestone) as the striking platform, especially on tabular chert from
bedded seams. One frequently finds a small proportion of tertiary flake
assemblages from Mesolithic chert-working sites for this reason
Last edited:
hello,
@Sambo I would suggest the Milky Chert which resembles Thornton's toffee in colour which has a Mohs hardness of 6.5 - 7.0 the further south you travel from Northumbria down through Yorkshire the darker the chert, much like flint. The lighter Milky Chert resembles something similar in colour to Carnation or Condensed milk. BTW the "Milky" is more of a descriptive term for the stone's colour than a specific geological classification. The beach at Flamborough Head would be a good suggestion for a stone kick location for a number of sparky stones tumbled by the North Sea.
Regards
David
@Sambo I would suggest the Milky Chert which resembles Thornton's toffee in colour which has a Mohs hardness of 6.5 - 7.0 the further south you travel from Northumbria down through Yorkshire the darker the chert, much like flint. The lighter Milky Chert resembles something similar in colour to Carnation or Condensed milk. BTW the "Milky" is more of a descriptive term for the stone's colour than a specific geological classification. The beach at Flamborough Head would be a good suggestion for a stone kick location for a number of sparky stones tumbled by the North Sea.
Regards
David