umptekite
Word Rarity
Very rare
Frequency: Zipf frequency 0.00 in modern English
17
Scrabble Score
9
Letters
1
Syllables
7
Unique Chars
Meaning
noun
A syenitic rock consisting of microperthite, arfvedsonite, aegirine and, possibly, nepheline.
Countable; Uncountable
Example Sentences
- "The rock-mass in which this umptekite form of hornblende occurs may therefore be called umptekite gabbro."
- "The Beverly syenite includes the alkaline syenites of Beverly, Manchester, Salem, and Marblehead, comprising pulaskites and umptekites."
- "There Strauss & Truter record a gradual transition from the white umptekite (fenite) to a pulaskitic rock with nepheline."