Geology Hike: Old Ortiz Mine to Placer Peak
Saturday, October 4, 9am to 2pm, please meet at 8:45am. REGISTRATION REQUIRED IN ADVANCE.
Ortiz Mountains Educational Preserve. Click here for directions.
Cost is free to members and $5 per each non-member.
Distance: 4 miles
Duration: 5-6 hours
Leader: Steve Maynard
This hike will be almost entirely within the large intrusive mass of augite monzonite that forms the highest peaks of the Ortiz Mountains. The augite monzonite is a coarse-grained, equigranular rock that is poor in quartz, thereby qualifying it as an alkaline intrusive rock. Although this particular rock is not believed to be directly responsible for nearby gold mineralization, it is part of a group of rocks that are associated with gold deposits in the Ortiz Mountains.
We will be able to see, describe, and generally pontificate about numerous significant geologic features of the Ortiz Mountains and north-central New Mexico from the upper slopes of Placer Peak and from its summit.
About Steve Maynard
Steve Maynard has worked for 30+ years in mineral exploration, looking for precious and base metal deposits in the US, Mexico, Canada, Central and South America, and Turkey. During the period 1986-1990, he was employed by LAC Minerals, USA, Inc., making a geologic map of the Ortiz Mountain range.
He also worked with the NM Bureau of Geology to complete geologic maps of the four USGS 7.5-minute topographic sheets that cover the Ortiz Mountains and the Cerrillos Hills. Detailed geologic information gathered during the 1980s was included in the compilation. Steve is presently working for a small Canadian exploration company with projects in Mexico. Steve is SFBG’s go to geology expert and a presenter at volunteer trainings.