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Article contents
I.—Banded and Brecciated Concretions1
Published online by Cambridge University Press: 01 May 2009
Extract
When we find at the sides of veins, the veinstone rent into laminæ, as I tried to represent in Plate XX. of Vol. IV. it is easy to think of the fracture as violent, and of the disruption of the vein as sudden.
Information
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- Original Articles
- Information
- Copyright
- Copyright © Cambridge University Press 1869
Footnotes
1
For former papers see Geol. Mag., 1867, Vol. IV. pp 337 and 481; also 1868, Vol. V. pp. 12, 156, and 208.
References
page 531 note 1 Of course I do not vouch for any so wide generalization as this absolutely. If ever one ventures to do such a thing, the next stone one takes up on a dealer's counter is sure to he an exception to the announced law; but I am confident that any mineralogist can fortify the statement from his own experience quite enough to justify our reasoning upon it.