Hohenlohe Flintstone

This stone can be found  next to our door!  Quite unspectular in the field ...but cutting reveals a colorful inside!

Synonyms:  Jasper,
Variety of:  microcrystalline and cryptocrystalline chalcedony and quartz
IMA Status:  Not recognised as mineral
Classification:  Oxides
Chemical formula:  SiO2
Crystal system:  Trigonal - microcrystalline, cryptocrystalline
Density (g/cm3):  2,6 - 2,9 measured
Tenacity:  Brittle
Cleavage:  Non observed
Fracture:  Conchoidal, sub-conchoidal
Hardness (Mohs):  6,5 - 7
Colour:  Rot, rot-brown, brown, grün, gelb, yellow, white but black too, any color due to embedded minerals
Lustre:  Vitreous, waxy, dull
Streak:  White
Application:  Local famous as a gemstone




TOPGEO Mineralienhandel GmbH
Dr. Petr Zajicek
Commercial register:
HRB 671194 Amtsgericht Ulm
VAT-Id: DE147815490
Gersbach 10
74589 Satteldorf
Telephone: +49 7950 1345
Telefax: +49 7950 8483
eMail: topgeo.gmbh@t-online.de | mail@topgeo.com