Environmental Assessment
Volume B-3.2
Mine
Geology and Geochemistry
Ambatovy Project
24
January 2006
•
single-stage short-term leach testing by synthetic precipitation leaching
procedure (SPLP) (United
States Environmental Protection Agency
Method 1312, USEPA 1995); and
•
consecutive SPLP (PD only).
The PD and Dynatec samples submitted for geochemical characterization are
listed in Table 3.2-1.
Table 3.2-1 Sample Characteristics and Description
EA
Sample ID
Material Category
Deposit
PD
G
ferricrete and grenaille
Ambatovy
Dynatec
FT-Am
FB-Am
PD
FER
NFER
ferralite
Ambatovy
PD
AFER
bauxitic material
Ambatovy
PD
KAO
kaolinitic clay
Ambatovy
Dynatec
LMS-Dy
PD
LMS-PD
low-Mg saprolite
Ambatovy
Dynatec
SAP-Dy
PD
SAP-PD
Pit 8 SAP
Hard SAP
saprolite
Ambatovy
PD
Bedrock
bedrock
Ambatovy
FT-An
Dynatec
FB-An
ferralite
Analamay
Note Suffixes “PD” and “Dy” are used to distinguish between Phelps Dodge and Dynatec samples of
the same lithology. Suffixes “Am” and “An” are used to distinguish between Dynatec Ambatovy
and Analamay samples from the same lithology. Samples without a suffix were part of the PD
program.
The geochemical testing program completed by Dynatec and PD on ore body
samples resulted in the following findings.
The QA/QC procedures and standards followed by SGS Lakefield Research and
Dynatec Technology Services are described in Volume I, Section 2.1.
Although the sixteen samples generally appear to be representative of their
respective lithologies, the total number of samples analyzed is small, however
many are represented by composites. Most lithologies recognized by PD and
Dynatec are represented by one or two samples
