Polymath 397

[oldham1]

Tamil nadu city (17) t-r-c---i-a---l-i

Legal proceeding re authority (3,8) --o/-a---n-o

Stone age axe (4,2,5) c-u-/--/p-a-g

Substance similar to another in crystalline form (8)

[gen2]

isomorph for the last one

[gen2]

Stone axe is coup de poing. Please check your A

[gen2]

QUO WARRANTO
for the legal one

[gen2]

Tiruchirapalli

[oldham1]

Thanks gen2 but city has 17 letters.

[pjwillcox]

the city is TIRUCHCHIRAPPALLI - spelt that way the the atlases and dictionaries i've looked up; but it then leaves a problem (for me) of 4d small loop or bow for which i've got C?Q?E and 5d solid with lots of faces for which i have
I?O?I?O?E?A?E?R?N. any ideas appeciated.

[oldham1]

icosidodecahedron !

[oldham1]

Sorry coque is the other one--thanks for the city.

[alanogden]

Thanks for all the help, they were baffling me too!