Name/Title
MascagniteEntry/Object ID
2014.1.1Description
Chemical Composition: (NH4)2SO4
Crystal System: Hexagonal System
Description: Common Name: Mascagnite Ammonium Sulfate
Chemistry: (NH4)2SO4
Group: Sulfates
Location: Geyser Creek Canyon, Sonoma County California
Description: Rough and porus matrix with area of white spherical mineral in a small grouping jutting out of matrix.
Physical Charateristics:
Physical Properties of Mascagnite
Lustre:
Vitreous, Dull
Diaphaneity (Transparency):
Transparent, Translucent, Opaque
Colour:
Colourless, grey, yellowish-grey, yellow; colourless in transmitted light
Hardness (Mohs):
2 - 2½
Tenacity:
Sectile
Cleavage:
Distinct/Good
On {001}.
Parting:
Twin gliding with K1(110), K2(130).
Fracture:
Irregular/Uneven
Density (measured):
1.768 g/cm3
Density (calculated):
1.769 g/cm3
Hardness: 7 Quartz
Rock Type: SedimentaryCollection
RAGM Mineral CollectionAcquisition
Accession
2014.1Source or Donor
Crater Rock Museum (unknown donors)Acquisition Method
GiftDimensions
Height
3-1/2 inWidth
1-3/4 inLength
2-1/4 inLocation
Location
Display Case
FS-11Room
Frieda Smith HallBuilding
Crater Rock MuseumCategory
PermanentMoved By
Curtis GardnerDate
May 25, 2023Notes
Added current location
