diff --git a/R/Makefile b/R/Makefile
index d1090773..2a88e386 100644
--- a/R/Makefile
+++ b/R/Makefile
@@ -17,6 +17,7 @@ VERSION ?= 1.0
 
 DBS = \
 	Amm.ascii \
+	ColdChem.ascii \
 	ex15.ascii \
 	iso.ascii \
 	llnl.ascii \
diff --git a/R/build-databases.R b/R/build-databases.R
index f580937e..2b51af23 100644
--- a/R/build-databases.R
+++ b/R/build-databases.R
@@ -1,5 +1,6 @@
 # databases
 ##Amm.dat.string       <- paste(scan("../database/Amm.dat",       what="", sep="\n"), collapse="\n")
+##ColdChem.dat.string  <- paste(scan("../database/ColdChem.dat",  what="", sep="\n"), collapse="\n")
 ##iso.dat.string       <- paste(scan("../database/iso.dat",       what="", sep="\n"), collapse="\n")
 ##llnl.dat.string      <- paste(scan("../database/llnl.dat",      what="", sep="\n"), collapse="\n")
 ##minteq.dat.string    <- paste(scan("../database/minteq.dat",    what="", sep="\n"), collapse="\n")
@@ -10,6 +11,7 @@
 ##wateq4f.dat.string   <- paste(scan("../database/wateq4f.dat",   what="", sep="\n"), collapse="\n")
 # lists
 Amm.dat         <- scan("Amm.ascii",       what="", sep="\n")
+ColdChem.dat    <- scan("ColdChem.ascii",  what="", sep="\n")
 ex15.dat        <- scan("ex15.ascii",      what="", sep="\n")
 iso.dat         <- scan("iso.ascii",       what="", sep="\n")
 llnl.dat        <- scan("llnl.ascii",      what="", sep="\n")
@@ -19,5 +21,5 @@ pitzer.dat      <- scan("pitzer.ascii",    what="", sep="\n")
 sit.dat         <- scan("sit.ascii",       what="", sep="\n")
 phreeqc.dat     <- scan("phreeqc.ascii",   what="", sep="\n")
 wateq4f.dat     <- scan("wateq4f.ascii",   what="", sep="\n")
-save(list = ls(all = TRUE), file = "phreeqc/data/databases.rda")
+save(list = ls(all = TRUE), file = "phreeqc/data/databases.rda", compress = "xz")
 rm(list = ls(all = TRUE))
diff --git a/R/phreeqc.R.in b/R/phreeqc.R.in
index 772e630e..ca1612cb 100644
--- a/R/phreeqc.R.in
+++ b/R/phreeqc.R.in
@@ -1403,7 +1403,7 @@ NULL
 
 ##' @name Amm.dat
 ##' @title The Amm.dat database.
-##' @description Amm.dat is the same as phreeqc.dat, except that ammmonia redox
+##' @description Amm.dat is the same as phreeqc.dat, except that ammonia redox
 ##' state has been decoupled from the rest of the nitrogen system; that is,
 ##' ammonia has been defined as a separate component. The database has been
 ##' reformatted for use by \code{\link{phrLoadDatabaseString}}.
@@ -1417,6 +1417,21 @@ NULL
 
 
 
+##' @name ColdChem.dat
+##' @title The ColdChem.dat database.
+##' @description ColdChem.dat is a low-temperature thermodynamic model for the
+##' Na-K-Ca-Mg-Cl system incorporating new experimental heat capacities in
+##' KCl, MgCl2, and CaCl2 solutions. Jonathan D. Toner and David C. Catling
+##' The database has been reformatted for use by \code{\link{phrLoadDatabaseString}}.
+##' @docType data
+##' @family Databases
+##' @source \url{http://wwwbrr.cr.usgs.gov/projects/GWC_coupled/phreeqc}
+##' @usage ColdChem.dat  # phrLoadDatabaseString(ColdChem.dat)
+##' @keywords dataset 
+NULL
+
+
+
 ##' @name wateq4f.dat
 ##' @title The wateq4f.dat database.
 ##' @description wateq4f.dat is a database derived from WATEQ4F. The database