MARS: Leo Colony
RA: 06h 05m 26.9s Dec: 24° 33′ 33.9″
TERRAFORMED: 2032 – 2040 POPULATION: 22,670,000
Also, to note due to the location of Mars relative to Earth, the prime planetary launch opportunity for the Red Planet occurs only once every 26 months. Depending on whether direct travel from Earth or from the Moon was required to begin terraforming.
ESTABLISHED: 2041* INDUSTRY: Mining, Tourism, Security, Terraforming, Light and Heavy Manufacturing.
NOTES: The largest security sector (weapons and logistics development and manufacture) and Atmospheric Processor facilities in the systems. Discovered in 1964. KEY RESOURCES: Cerium , Nickel , Tungsten , Neodymium .
Estimation of Leo in Gale
Currently, there is not much information to accurately locate Weyland’s Leo Colony, but one of the possible areas considered for colonisation on Mars in Gale Crater.
Sometimes it’s better to stick with what you know. Sure, there’s a lot we’re yet to learn about Mars, but when it comes to sending humans to its surface some travel advice is better than none. In the few short years since NASA’s Curiosity rover touched down inside this 154 km (96 mi) wide basin, it has found evidence of water and an ancient freshwater lake, analyzed valuable samples of soil, sent back weather reports and snapped spectacular selfies along the way. So if we do decide to make the Gale Crater our first Martian home, the fact that we’ve already got some idea of what to expect makes it as good a choice as any. 
This Black Glass Vein carries a high concentration of Cerium. Cerium, grey and lustrous in appearance. One of the most reactive of the rare-earth metals is also malleable and is part of the group of elements called lanthanides.
But what about minerals that will be needed to fuel manufacturing efforts and build adequate subterranean habitations? The relative scarcity of data on Martian geology means there is less confidence of mineral deposits than in even the riskiest inferred mineral resources on Earth. However, there is enough information to make some likely estimations.
A 2009 research paper written by Michael D. West of the Mars Institute and Jonathan D.A. Clarke of the Australian Centre for Astrobiology contended that although the differences between the atmosphere and crusts of the Earth and Mars make mineral exploration less predictable, there are areas, especially large igneous provinces, volcanoes and impact craters that hold significant potential for nickel, copper, iron, titanium, platinum group elements and more. 
Tungsten is known as one of the toughest things found in nature. It is super dense and almost impossible to melt. Pure tungsten is a silver-white metal and when made into a fine powder can be combustible and can spontaneously ignite.
Tungsten is used in many different ways because it is very strong and durable. It is very resistant to corrosion and has the highest melting point and highest tensile strength of any element. Its strength comes when it is made into compounds, though. Pure tungsten is very soft. 
Neodymium is the second most abundant of the rare-earth elements (after cerium) an is almost as abundant as copper. It is found in minerals that include all lanthanide minerals, such as monazite and bastnasite. The main areas are Brazil, China, USA, India, Sri Lanka and Australia. Reserves of neodymium are estimated to be 8 million tonnes, the world production of neodymium oxide is about 7.000 tonnes a year. 
- Gale Crater, Three great places to live on Mars by Nick Lavars October 1st, 2016 https://newatlas.com/great-places-to-live-mars/45654/
- Facts About Cerium By Live Science Staff | June 20, 2013 02:13pm ET https://www.livescience.com/37606-cerium.html
- Nickel on Mars, 13 FEBRUARY 2017 ANALYSIS
Sands of Mars: digging up the red planet
By Chris Lo https://www.mining-technology.com/features/featuresands-of-mars-digging-up-the-red-planet-5739297/
- Facts About Tungsten By Alina Bradford, Live Science Contributor | November 18, 2016 06:18pm ET https://www.livescience.com/38997-facts-about-tungsten.html
- Neodymium – Nd, Chemical properties of neodimium – Health effects of neodymium – Environmental effects of neodymium, Read more: https://www.lenntech.com/periodic/elements/nd.htm#ixzz5URRfrdA7
Nasa Mars Exploration Zones https://youtu.be/94bIW7e1Otg