Paige

Thank you for getting back to me, so I've been messing with the program some more and I am getting closer I think but I just want to verify I am not missing anything. I've attached my most recent model to this post with the input I did to achieve it. I suppressed everything except the minerals I am interested in (Albite is also included in this diagram although not showing up at stable with these conditions). I guess my main question is, I noticed the Yucca Mountain database that is included in the installation includes thermo data for each of these minerals I am interested in and so I am using this to achieve this diagram. Can these log Ks values reported for these minerals at various temperatures be extrapolated for my area of interest? I am also looking at a caldera volcano similar to Yucca Mountain that underwent alteration by fluids of some type, so I am assuming reactions would be the same for the minerals that are listed in this database. The issue is that the papers I am looking at do not give equilibrium constants and I do not think there are any reported for my area specifically. The only information given from these papers is that Log a H2O = 1 and Log a SiO2(aq) = -3.7 for my system. In addition, are there any big things to include for activity-activity diagrams that it seems I am missing here in my input file?

Hello, I am trying to recreate a figure from two papers that used Act2 to determine the stability fields of certain zeolites, both of which I have attached to this thread. I am very new to this program and was wondering if I could get some general questions answered. I've looked through the guides, and if I've missed the answers to these I apologize, but I was wondering: 1. What do the "diagram species" and "in the presence of" boxes refer to exactly? 2. How do I add minerals to the database that I need for my research? I know analcime is in there, but it is missing phillipsite and chabazite. 3. Is there anything I need to know when making these diagrams? I know how to add in the x-y axis as they are in these figures, but when it comes to "diagram species" and "in the presence of" I'm not entirely sure what it means. Right now, I know that for my purposes Log a H2O = 1 and Log a SiO2 = -3.7. Does SiO2 go into the "in the presence of" box? I am mostly interested in zeolites, and some authigenic feldspar, so I am just curious how those would fit into these diagrams with the inputs provided in Act2.

Hello, I am trying to recreate a figure from two papers that used Act2 to determine the stability fields of certain zeolites, both of which I have attached to this thread. I am very new to this program and was wondering if I could get some general questions answered. I've looked through the guides, and if I've missed the answers to these I apologize, but I was wondering: 1. What do the "diagram species" and "in the presence of" boxes refer to exactly? 2. How do I add minerals to the database that I need for my research? I know analcime is in there, but it is missing phillipsite and chabazite. I know how to add in the x-y axis as they are in these figures, but when it comes to "diagram species" and "in the presence of" I'm not entirely sure what it means. Right now, I know that for my purposes Log a H2O = 1 and Log a SiO2 = -3.7. Does SiO2 go into the "in the presence of" box? I am mostly interested in zeolites, and some authigenic feldspar, so I am just curious how those would fit into these diagrams with the inputs provided in Act2.