Bambolla mine, Moctezuma, Sonora, Mexico Link to MinDat.org Location Data.
Name Origin:
The name is in allusion to its chocolate-brown color and its Mexican type locality which is used to indicate the color of a sacred beverage made by mixing cocoa (Xocolatl), water, v anilla, pepper, and chili.
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Habit:
Encrustations - Forms crust-like aggregates on matrix.
Habit:
Micaceous - Platy texture with "flexible" plates.
Hardness:
2-3 - Gypsum-Calcite
Luster:
Vitreous (Glassy)
Streak:
copper brown
Optical Properties of Xocolatlite
Gladstone-Dale:
CI meas= 0.016 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.141 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2128,KPDmeas= 0.2439,KC= 0.2478 Ncalc = 2.02 - 2.16
Optical Data:
Biaxial (?), a=2, g=2, bire=0.0000
Calculated Properties of Xocolatlite
Electron Density:
Bulk Density (Electron Density)=3.75 gm/cc note: Specific Gravity of Xocolatlite =4.10 gm/cc.
Fermion Index:
Fermion Index = 0.03 Boson Index = 0.97
Photoelectric:
PEXocolatlite = 136.71 barns/electron U=PEXocolatlite x rElectron Density= 513.26 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Xocolatlite is Not Radioactive
Chemical Formula: 