Test Website - You are connected to the test webserver. To return to the live website, click here

Microcline

Microcline (Greek - small slope) has the same chemical composition as orthoclase but is classified in the triclinic crystal system. The blue-green feldspar amazonite is the only gem variety of microcline.
General Information
A variety or type of:Feldspar
Varieties/Types:
Amazonite - A green to blue-green variety of Microcline.
Chemical Formula
KAlSi
 
3
O
 
8
Arthur Thomas, Gemstones (2009)
Mohs Hardness
( ! ) Fatal error: Uncaught mysqli_sql_exception: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb3_uca1400_ai_ci,COERCIBLE) for operation '=' in /big/www/gemdat/gemshow_class.php on line 690
( ! ) mysqli_sql_exception: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb3_uca1400_ai_ci,COERCIBLE) for operation '=' in /big/www/gemdat/gemshow_class.php on line 690
Call Stack
#TimeMemoryFunctionLocation
10.0007360344{main}( ).../gshow.php:0
20.1934799968gemshow_class->do_physical( ).../gshow.php:149
30.1934816544gemshow_class->showblock( $txt = 'HARD-MIN' ).../gemshow_class.php:1113
40.1935833680gemshow_class->showdata( $dataname = 'HARD-MIN' ).../gemshow_class.php:505
50.1936834080query( $query = 'select * from mineralproperties,mineralpropertytypes where \r\n\t\t\t\t\tmp_mpt_id=mpt_id and mpt_code=\'HARD-MAX\' and \r\n\t\t\t\t\tmp_min_id=\'2704\' and mp_deleted=0 and\r\n\t\t\t\t\tmp_reference=\'Gems, Sixth Edition\' and\r\n\t\t\t\t\tmp_referenceauthor=\'Michael O’Donoghue\' and\r\n\t\t\t\t\tmp_referenceyear=\'2006\' and\r\n\t\t\t\t\tmp_referencepublisher=\'Elsevier\' and\r\n\t\t\t\t\tmp_referenceperiodical=\'\'' ).../gemshow_class.php:690