| Oxide | Los posos, Ref. [1] | Los posos, Ref. [1] | Samples KS, Refs. [4,5] | Samples KS, Refs. [4,5] |
| Oxide | wt%                 | mol%                | atom/cm3 (x1021)        | wt%                     |
| SiO2  | 77.1                | 82.7                | 18.0                    | 17.5                    |
| Al2O3 | 12.3                | 7.8                 | 3.52                    | 12.5                    |
| Fe2O3 | 1.1                 | 1.0                 | 0.2                     | l.0                     |
| TiO2  | 0.1                 | 0.1                 |                         |                         |
| CaO   | 0.3                 | 0.3                 | 0.07                    | 0.5                     |
| MgO   | <0.1                |                     |                         |                         |
| Na2O  | 4.2                 | 4.4                 | 1.66                    | 3.6                     |
| K2O   | 4.7                 | 3.2                 | 1.40                    | 4.8                     |
| H2O   | 0.2                 | 0.7                 |                         |                         |

Caption: Compositions of rhyolite glasses

You are provided with a table from a material science paper. Here are JSON templates for two types of numeric cells: "Other" and "Glass_Compound_Amount":
{"value": "xx", "type": "Other"}
{"value": "xx", "type": "Glass_Compound_Amount", "constituent": "xx", "unit": "xx", "material": "xx"}

Please describe all numeric cells in the above table following the JSON templates (proceeding by row in a left-right, top-down direction). For each cell, output one JSON description per line. For any unanswerable attributes in the templates, set their value to the placeholder "xx".

Cell Description:
{"value": "77.1", "type": "Glass_Compound_Amount", "constituent": "SiO2", "unit": "wt", "material": "Los posos, Ref. [1]"}
{"value": "82.7", "type": "Glass_Compound_Amount", "constituent": "SiO2", "unit": "mol", "material": "Los posos, Ref. [1]"}
{"value": "18.0", "type": "Other"}
{"value": "17.5", "type": "Other"}
{"value": "12.3", "type": "Glass_Compound_Amount", "constituent": "Al2O3", "unit": "wt", "material": "Los posos, Ref. [1]"}
{"value": "7.8", "type": "Other"}
{"value": "3.52", "type": "Other"}
{"value": "12.5", "type": "Other"}
{"value": "1.1", "type": "Glass_Compound_Amount", "constituent": "Fe2O3", "unit": "wt", "material": "Los posos, Ref. [1]"}
{"value": "1.0", "type": "Other"}
{"value": "0.2", "type": "Other"}
{"value": "0.1", "type": "Glass_Compound_Amount", "constituent": "TiO2", "unit": "wt", "material": "Los posos, Ref. [1]"}
{"value": "0.1", "type": "Other"}
{"value": "0.3", "type": "Glass_Compound_Amount", "constituent": "CaO", "unit": "wt", "material": "Los posos, Ref. [1]"}
{"value": "0.3", "type": "Other"}
{"value": "0.07", "type": "Other"}
{"value": "0.5", "type": "Other"}
{"value": "0.1", "type": "Glass_Compound_Amount", "constituent": "MgO", "unit": "wt", "material": "Los posos, Ref. [1]"}
{"value": "4.2", "type": "Glass_Compound_Amount", "constituent": "Na2O", "unit": "wt", "material": "Los posos, Ref. [1]"}
{"value": "4.4", "type": "Other"}
{"value": "1.66", "type": "Other"}
{"value": "3.6", "type": "Other"}
{"value": "4.7", "type": "Glass_Compound_Amount", "constituent": "K2O", "unit": "wt", "material": "Los posos, Ref. [1]"}
{"value": "3.2", "type": "Other"}
{"value": "1.40", "type": "Other"}
{"value": "4.8", "type": "Other"}
{"value": "0.2", "type": "Glass_Compound_Amount", "constituent": "H2O", "unit": "wt", "material": "Los posos, Ref. [1]"}
{"value": "0.7", "type": "Glass_Compound_Amount", "constituent": "H2O", "unit": "mol", "material": "Los posos, Ref. [1]"}